poker hand vs pair

poker hand and pair both are nouns.

Word	Noun	Adjective	Verb	Adverb
poker hand	Yes	No	No	No
pair	Yes	No	Yes	No

As nouns, pair is a hyponym of poker hand; that is, pair is a word with a more specific, narrower meaning than poker hand:

Other hyponyms of poker hand include royal flush, straight flush, full house, flush, straight.

poker hand (noun)	pair (noun)
the 5 cards held in a game of poker	two people considered as a unit
	a set of two similar things considered as a unit
	a poker hand with 2 cards of the same value
	two items of the same kind

poker hand (verb)	pair (verb)
	engage in sexual intercourse
	bring two objects, ideas, or people together
	arrange in pairs
	occur in pairs
	form a pair or pairs