needy vs poor

needy and poor both are nouns.

Word	Noun	Adjective	Verb	Adverb
needy	Yes	Yes	No	No
poor	Yes	Yes	No	No

As nouns, poor is a hypernym of needy; that is, poor is a word with a broader meaning than needy:

Other hypernyms of needy include poor people.

needy (noun)	poor (noun)
needy people collectively	people without possessions or wealth (considered as a group)

needy (adjective)	poor (adjective)
demanding or needing attention, affection, or reassurance to an excessive degree	having little money or few possessions
poor enough to need help from others	lacking in quality or substances
	characterized by or indicating poverty
	of insufficient quantity to meet a need
	deserving or inciting pity