Timeline for What is the part of speech is "the door" in the sentence below?

9 events

when toggle format	what		by	license	comment
Dec 7, 2018 at 1:36	history	edited	curiousdannii	CC BY-SA 4.0	added 2 characters in body; edited tags
Dec 7, 2018 at 0:37	answer	added	Joseph O.		timeline score: -1
Dec 6, 2018 at 22:29	comment	added	John Lawler		You're right, but you've got the rule by the wrong end. Direct objects have to be noun phrases, and nouns are almost always noun phrases. But complex constituents like quite a few more than I expected of the bright red antique British cars on parade are also noun phrases -- you wouldn't want to say that was all one noun, right? As @BillJ said, the door is a noun phrase. That means it's a phrase that is used like a noun. There are also verb phrases, adjective phrases, and adverb phrases, same kind of interpretation.
Dec 6, 2018 at 19:37	comment	added	Zebrafish		@BillJ Isn't "the door" a part of speech if it's an object? It functions as the object but it also is the object, no? I'm not understanding.
Dec 6, 2018 at 19:25	comment	added	BillJ		You're confusing category (part of speech) and function. "The door" is a noun phrase, whose function here is direct object of "answer".
Dec 6, 2018 at 19:02	answer	added	Cerberus - Reinstate Monica		timeline score: 1
Dec 6, 2018 at 19:00	review	Close votes
Dec 22, 2018 at 3:05
Dec 6, 2018 at 18:40	review	First posts
Dec 6, 2018 at 18:56
Dec 6, 2018 at 18:36	history	asked	PKS	CC BY-SA 4.0