Difference between “then” and “than” [closed]

Question

I am having difficulty trying to distingush between then and than.

What I find confusing is their pronunciation, and when to use them.

For example:

He walked, stopped, than/then picked up a stone.

Should it be than or then, and why?

Answer 1

They don't share anything apart from the similar pronunciation, if you click them they will bring you to the OALD, where you can hear the pronunciation.

Than is used to introduce the second term comparison:

• That car is bigger than mine.
• It won't take less than an hour to get there.

---

Then is a polysemous adverb. In case you don't know, polysemous comes from poly (many) + sema (signs). It describes a word that has many meanings, which change from the context, and then is one of those. It can be:

1. Used to refer to a certain time in the past or future:

   • Life was harder then because neither of us had a job.
   • Just then (= at that moment) there was a knock at the door.

2. Used to introduce another part of the discourse:

   • First cook the onions, then add the mushrooms.

3. Used to show a logical result:

   • If you miss that train then you'll have to get a taxi.

4. Used to introduce additional information:

   • She's been very busy at work and then there was all that trouble with her son.

5. Used to introduce a summary of something that has just been said:

   • These, then, are the main areas of concern.

6. Used to show the beginning or end of a conversation, statement, etc.

   • Right then, where do you want the table to go?

^{The examples and these multiple definitions were took from the OALD, because I thought it was well organised.}

Answer 2

"Then"

The word 'then' refers to one thing following another in time or causality ("It fell over, then broke")

The word 'than' refers to a comparison (usually where the two items are unequal) - for instance, "This big beefburger looks tastier than that limp salad"

Answer 3

As others say, the semantics of these words is very different and others have clearly defined the meaning. All that is left for you is to memorize it. Here is, a bit of etymology:

The adverb then developed first

adverb of time, from O.E. þanne, þænne, þonne, from P.Gmc. *thana- (cf. O.Fris. thenne, O.S. thanna, Du. dan, O.H.G. danne, Ger. dann), from PIE demonstrative pronoun root *to- (see the). For further sense development, see than.

A little mnemonic trick is to remember the letter e in "then" and letter e in "time".

than O.E. þan, conjunctive particle used after a comparative adj. or adv., from þanne, þænne, þonne "then" (see then). Developed from the adverb then, and not distinguished from it in spelling until c.1700. The earliest use is in W.Gmc. comparative forms, i.e. bigger than (cf. Du. dan, Ger. denn), which suggests a semantic development from the demonstrative sense of then: A is bigger than B, evolving from A is bigger, then ("after that") B.

So, even though the words have completely different meaning, they share etymology and in some languages they did not even develop into different words:

Similar evolutions in other Germanic languages; Dutch uses dan in both senses, but German has dann (adv.) "then," denn (conj.) "than." Now and then "at various times" is attested from 1550s; earlier then and then (c.1200).