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What determines whether something is a "noun adjunct" or just a garden-variety adjective? Does it matter in any meaningful way?

Here is my hypothesis, but I can't find any authoritative source to back it up. I'm hoping someone here can weigh in more definitively.

  1. Classification of noun adjuncts is based subjectively on whether the word is in "common usage" as a noun. "Book" and "chicken" are commonly nouns and would be considered noun adjuncts in "book collector" and "chicken soup"; "yellow", not so much.
  2. Noun adjuncts may share some common qualities that differentiate them from other adjectives (like not being able to be inflected into superlative forms... one can't be a "book-est collector"). But they are still fundamentally adjectives and may even appear in the dictionary as such if the adjectival usage is common enough.

What I've found so far...

Wikipedia defines a "noun adjunct" as:

an optional noun that modifies another noun; it is a noun functioning as an adjective.

But English words are not decreed to be nouns or adjectives by some higher authority. So it seems strange that one can prescriptively conclude that something "is a noun" in the first place, let alone extrapolate that it "is a noun functioning as an adjective".

The wiki article cites "chicken soup" as an example of a noun adjunct, but at least one dictionary gives a definition for "chicken" as:

adj. (of food) containing, made from, or having the flavor of chicken

So it seems that there are some differing points of view on how to categorize these words.

This question was spawned from some discussion in this question, this question and this other question.

marked as duplicate by Araucaria, Edwin Ashworth, Drew, Ellie Kesselman, Lynn Jan 3 '15 at 12:51

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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    Are you asking whether "it's a noun or an adjunct"? Nouns can be adjuncts and adjectives can be adjuncts. Maybe you're asking whether it's a noun or an adjective? Or maybe you're confused between the part of speech and the function? – Araucaria Jan 2 '15 at 22:50
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    @EdwinAshworth Yes, indeed. But no grammar or syntax publications abide by the parts of speech attributed to words by dictionaries. There may be contentious cases, but no serious grammar published by OUP or CUP (apart from ELL pubs) say that, for example, umbrella in umbrella stand is an adjective. And no grammar papers published for grammarians or syntacticians in reputable academic journals would refer to it as such. Basic grammars even ones as old as CGEL 1985 distinguish between part of speech and function :) – Araucaria Jan 2 '15 at 23:04
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    ""noun adjunct" <== Is that a Part-Of-Speech (category?) or is it a syntactic function? -- cc. @Araucaria – F.E. Jan 2 '15 at 23:09
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    I've added an answer there, with a couple of references. It seems rather crazy to say that 'plastic' in 'plastic spoon' is an adjective (though the adjective appeared well before the noun, albeit not with the 'made from ...' sense) while 'steel' in 'steel knife' is a noun. – Edwin Ashworth Jan 2 '15 at 23:25
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    If you look at the monograph 'Nominal Modifiers in Noun Phrase Structure: Evidence from Contemporary English' [Pastor Gómez, Iria] now linked to in the earlier thread, you'll find nearly 200 pages of analysis essentially saying 'The situation is fluid, if rather viscous; analysis of some cases is difficult, and there is scope for disagreement'. – Edwin Ashworth Jan 3 '15 at 0:40
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But they are still fundamentally adjectives

Here's where I disagree with the rest of your description, that I otherwise think is correct.

If such a word is "fundamentally" anything (I'll come back to that "if"), it's fundamentally a noun: We think of it as a noun in the abstract. We can't inflect it like like an adjective because it isn't one (though other adjectives may not be able ). They are being used as adjectives, but take them away from that use and their adjectival quality is lost again.

and may even appear in the dictionary as such if the adjectival usage is common enough.

But then it has developed an adjective sense. Or rather, it developed such a sense, and then was recorded as such in the dictionary. Or rather, some lexicographer decided that it had developed such a sense and then recorded it; I'm not convinced the entry you link to was justified; "chicken hot soup" would still be wrong if chicken were accepted as an adjective for the material, but it would be less wrong. I suppose it depends in part in whether we consider "the soup is chicken" to be a contraction of "the soup is chicken soup" or not.

But English words are not decreed to be nouns or adjectives by some higher authority.

So there are no nouns at all?

So it seems strange that one can prescriptively conclude that something "is a noun" in the first place, let alone extrapolate that it "is a noun functioning as an adjective".

Who said anything about prescriptively concluding something "is a noun"?

Now one can prescriptively do so (you can't stop me!) and indeed everyone does; everyone prescriptively decides what they themselves will or will not write. If you decide you are prepared to write "the wall is kitchen" or that you are not, you're being prescriptive.

But we don't need to consider that either. Descriptively you can either observe that people do not generally say "the wall is kitchen" of a kitchen wall, and so it is not an adjective, or you can argue that they might, and so it is an adjective.

I said I'd come back to the "if" of "if such a word is 'fundamentally' anything", and it's because I don't think fundamentally makes sense for things like parts of speech. Parts of speech, especially the traditional parts of speech, are useful classifications. Just how useful is something linguists might debate, as they might also debate just what those parts of speech actually are and e.g. whether determiners are a type of quantifier or separate, and so on.

There are senses in English that can act as a name of a thing or set of things and we call them nouns. They can also be used to modify other nouns they precede, and we call that use noun adjuncts. There are other senses that modify nouns that way and also predicatively and with adverbs further modifying them, and we call them adjectives.

And this is useful up to a point, but I don't think there's anything fundamental about any of it.

There remain qualities that nouns have, even if used as modifiers, that adjectives do not, and therefore the concept of noun and adjective remain usefully separate.

  • I agree with a lot of what you have, but I'm still shaky on the idea that this is 'fundamentally' a noun. (I may have used the wrong word there.) "Home" is a word that it seems have equally-weighted adjectival, adverbial, noun(al?) and verbal uses. How does one call it 'fundamentally' anything in the abstract? Now in a given instance one can say it's acting one way or the other, but by what criteria would we argue that one use is more basic than another? – Lynn Jan 2 '15 at 23:32
  • Darn it. I did say I was going to come back to "fundamentally", and then I never did. One minute... – Jon Hanna Jan 2 '15 at 23:35
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    @Lynn Some would say that those are four different words. You're asking for 'the answer' when the experts don't even agree on basics. – Edwin Ashworth Jan 3 '15 at 0:45
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    @EdwinAshworth I'm not sure that's really correct. Whether the experts agree or not is a question of numbers, not whether there's one paper kicking around somewhere that says one thing or another. "The professionals" are not in disagreement here! (Actually aren't the professionals 1970's anti-crime unit?) – Araucaria Jan 3 '15 at 7:02
  • @Araucaria If you troubled to read the article I linked to in a recent answer to the previous version of this question, you'd see that one analyst even claims that zero in zero modification and macaroni in macaroni salad should be labelled 'adjective' and 'attributive noun' respectively. I can't be bothered searching for the 'Are "intercategorial polysemes" actually different words?' article I once came across. I seem to remember Pullum saying something like 'English Grammar needs a complete overhaul' a few years back. – Edwin Ashworth Jan 3 '15 at 12:11
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Can the word in question be modified with an enhancer like too or very? Then it's an adjective. Otherwise it's an attributive modifier. (The assumption is we're asking if it's an adjective proper or a noun used attributively.)

In theFreeDictionary an adjective is:

The part of speech that modifies a noun or other substantive by limiting, qualifying, or specifying and distinguished in English morphologically by one of several suffixes, such as -able, -ous, -er, and -est, or syntactically by position directly preceding a noun or nominal phrase.

but generally people understand it as:

a word imputing a characteristic to a noun or pronoun

Grammar-Quizzes.com indicates two descriptions, depending on the audience:

Traditional and ESL (English for Speakers of other Languages) description:

It's a "noun as adjective".

Arguably, in the definition of adjective in the sense of applying a characteristic to a noun or pronoun, a file cabinet uses the noun file to apply a characteristic to another noun (cabinet) and can be considered to be a noun used as an adjective.

Linguistic Description:

Current linguistic analysis describes the examples above as "nouns used as attributive modifiers". That is to say, a "noun" cannot be an "adjective" (a grammatical class) but it can be a "modifier" (a grammatical function). Because it occurs before the head noun, it is called a "pre-head modifier". (Huddleston 4.2.2-3, 5 §14.2)
"Attributive nouns fail to qualify as adjectives by virtue of the grading and adverbial dependents criteria. They don't take very or too or the analytic comparative marker more as modifier." — Nouns as Attributive Modifiers (Huddleston 16.2.4.1)
A fresh cheese cake is delicious.
Both fresh (adj) and cheese (n) function as modifiers to the noun cake. The noun phrase (NP) "A fresh cheese cake" functions as the subject of the clause.

Many common ideas in English are expressed by noun + noun compounds. The first noun is singular and no article is included. The second noun may be plural and may include an article (if it is a count noun) a horse race / some horse races.
The first noun modifies or describes the second noun:
(1) the first noun classifies the second noun: (tells which kind)
milk chocolate (a kind of chocolate) / chocolate milk ( a kind of milk)
a horse race (a kind of race) / a race horse (a kind of horse)
(2) the second noun is the subject of the first noun: ("for")
a shoe shop (a shop that sells shoes; a shop for shoes)
a tooth brush (a brush that cleans teeth; a brush for teeth)
(3) the second noun is a container for the first noun:
a coffee can / cup
a soap dish / box
(4) first noun indicates the material of the second noun:
a gold ring / a silver ring
a paper flower / a silk flower
(Swan 385-6)
Ambiguous pairs occur: a baby doctor (a young doctor, a kind of doctor); a baby store (a store that sells babies, a store for baby goods)

In Linguistic terms, there is no ability to make a noun too noun, very noun, more noun-er, less noun-er, noun-able, or noun-ous, therefore it's never not a noun. The noun can be used attributively but is still considered a noun, even as its function differs from its part of speech.

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    'Can the word be modified with too or very? Then it's an adjective. Otherwise it's an attributive modifier.' So 'dead' in 'dead cat' is ... This 'rule' does not distinguish between attributive nouns; and classifying, absolute, and extreme adjectives. Yes, that's a super-comma. – Edwin Ashworth Jan 2 '15 at 22:42
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    @EdwinAshworth the cat was too dead for Frankenstein's latest experiment ;) – Jon Hanna Jan 2 '15 at 22:58
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    @Jon Hanna It must have been a very unique occasion. – Edwin Ashworth Jan 2 '15 at 23:00
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    It was very dead. Or mostly dead. – SrJoven Jan 2 '15 at 23:03
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    I am puzzled why someone hasn't produced the definition of "noun adjunct" that will decide the case. Could it possibly be because it is not a term based on actual grammar, but perhaps invented by a textbook author or publisher? Any term must have tests that distinguish whether a given constituent has this property or not; otherwise it's handwaving. – John Lawler Jan 2 '15 at 23:20

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