lip vs shoe collar

lip and shoe collar both are nouns.

Word	Noun	Adjective	Verb	Adverb
lip	Yes	No	No	No
shoe collar	Yes	No	No	No

As nouns, shoe collar is a hyponym of lip; that is, shoe collar is a word with a more specific, narrower meaning than lip:

Other hyponyms of lip include collar.

lip (noun)	shoe collar (noun)
either the outer margin or the inner margin of the aperture of a gastropod's shell	the stitching that forms the rim of a shoe or boot
the top edge of a vessel or other container
either of two fleshy folds of tissue that surround the mouth and play a role in speaking
an impudent or insolent rejoinder
(botany) either of the two parts of a bilabiate corolla or calyx