poem vs lay

poem and lay both are nouns.

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

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

poem (noun)	lay (noun)
a composition written in metrical feet forming rhythmical lines	a narrative poem of popular origin
	a narrative song with a recurrent refrain

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

poem (verb)	lay (verb)
	put in a horizontal position
	put into a certain place or abstract location
	lay eggs
	prepare or position for action or operation
	impose as a duty, burden, or punishment