bitch vs gripe

bitch and gripe both are nouns.

Word	Noun	Adjective	Verb	Adverb
bitch	Yes	No	Yes	No
gripe	Yes	No	Yes	No

As nouns, bitch and gripe are synonyms defined as:

Other synonyms of bitch include beef, kick, squawk.

As verbs, bitch and gripe are synonyms defined as:

Other synonyms of bitch include beef, bellyache, crab, grouse, holler, squawk.

bitch (noun)	gripe (noun)
female of any member of the dog family	informal terms for objecting
informal terms for objecting
a person (usually but not necessarily a woman) who is thoroughly disliked
an unpleasant difficulty

bitch (verb)	gripe (verb)
say mean things	complain
complain