ruffed grouse vs partridge

ruffed grouse and partridge both are nouns.

Word	Noun	Adjective	Verb	Adverb
ruffed grouse	Yes	No	No	No
partridge	Yes	No	No	No

As nouns, ruffed grouse and partridge are synonyms defined as:

ruffed grouse and partridge: valued as a game bird in eastern United States and Canada

Other synonyms of ruffed grouse include Bonasa umbellus.

ruffed grouse (noun)	partridge (noun)
valued as a game bird in eastern United States and Canada	small Old World gallinaceous game birds
	a popular North American game bird; named for its call
	valued as a game bird in eastern United States and Canada
	heavy-bodied small-winged South American game bird resembling a gallinaceous bird but related to the ratite birds
	flesh of either quail or grouse