prairie fowl vs prairie grouse

prairie fowl and prairie grouse both are nouns.

Word	Noun	Adjective	Verb	Adverb
prairie fowl	Yes	No	No	No
prairie grouse	Yes	No	No	No

As nouns, prairie fowl and prairie grouse are synonyms defined as:

prairie fowl and prairie grouse: brown mottled North American grouse of western prairies

Other synonyms of prairie fowl include prairie chicken.

prairie fowl (noun)	prairie grouse (noun)
brown mottled North American grouse of western prairies	brown mottled North American grouse of western prairies