pair vs join

pair and join both are nouns.

Word	Noun	Adjective	Verb	Adverb
pair	Yes	No	Yes	No
join	Yes	No	Yes	No

As verbs, join is a hypernym of pair; that is, join is a word with a broader meaning than pair:

Other hypernyms of pair include conjoin.

As verbs, join is a hypernym of pair; that is, join is a word with a broader meaning than pair:

pair (noun)	join (noun)
two people considered as a unit	a set containing all and only the members of two or more given sets
a set of two similar things considered as a unit	the shape or manner in which things come together and a connection is made
a poker hand with 2 cards of the same value
two items of the same kind

pair (verb)	join (verb)
engage in sexual intercourse	make contact or come together
bring two objects, ideas, or people together	cause to become joined or linked
arrange in pairs	become part of; become a member of a group or organization
occur in pairs	come into the company of
form a pair or pairs	be or become joined or united or linked