impose vs lay

impose is not a noun while lay is a noun.

Word	Noun	Adjective	Verb	Adverb
impose	No	No	Yes	No
lay	Yes	Yes	Yes	No

As verbs, lay is a hyponym of impose; that is, lay is a word with a more specific, narrower meaning than impose:

Other hyponyms of impose include toll, tithe, reimpose, fine, mulct, tax, distrain.

impose (noun)	lay (noun)
	a narrative poem of popular origin
	a narrative song with a recurrent refrain

impose (adjective)	lay (adjective)
	not of or from a profession
	characteristic of those who are not members of the clergy

impose (verb)	lay (verb)
impose something unpleasant	put in a horizontal position
impose and collect	put into a certain place or abstract location
compel to behave in a certain way	lay eggs
	prepare or position for action or operation
	impose as a duty, burden, or punishment