lay vs impose

lay is a noun but impose is not a noun.

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

As verbs, impose is a hypernym of lay; that is, impose is a word with a broader meaning than lay:

Other hypernyms of lay include levy.

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

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

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