raiser vs bridge partner

raiser and bridge partner both are nouns.

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

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

raiser: a bridge partner who increases the partner's bid
bridge partner: one of a pair of bridge players who are on the same side of the game

raiser (noun)	bridge partner (noun)
someone concerned with the science or art or business of cultivating the soil	one of a pair of bridge players who are on the same side of the game
a bridge partner who increases the partner's bid