bridge partner vs collaborator

bridge partner and collaborator both are nouns.

Word	Noun	Adjective	Verb	Adverb
bridge partner	Yes	No	No	No
collaborator	Yes	No	No	No

As nouns, collaborator is a hypernym of bridge partner; that is, collaborator is a word with a broader meaning than bridge partner:

bridge partner: one of a pair of bridge players who are on the same side of the game
collaborator: an associate in an activity or endeavor or sphere of common interest

Other hypernyms of bridge partner include bridge player, hand, cooperator, pardner, partner.

bridge partner (noun)	collaborator (noun)
one of a pair of bridge players who are on the same side of the game	an associate in an activity or endeavor or sphere of common interest
	someone who collaborates with an enemy occupying force
	someone who assists in a plot