grouse vs holler

grouse and holler both are nouns.

Word	Noun	Adjective	Verb	Adverb
grouse	Yes	No	Yes	No
holler	Yes	No	Yes	No

As verbs, grouse and holler are synonyms defined as:

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

grouse (noun)	holler (noun)
popular game bird having a plump body and feathered legs and feet	a very loud utterance (like the sound of an animal)
flesh of any of various grouse of the family Tetraonidae; usually roasted; flesh too dry to broil	a small valley between mountains