rock partridge vs partridge

rock partridge and partridge both are nouns.

Word	Noun	Adjective	Verb	Adverb
rock partridge	Yes	No	No	No
partridge	Yes	No	No	No

As nouns, partridge is a hypernym of rock partridge; that is, partridge is a word with a broader meaning than rock partridge:

rock partridge (noun)	partridge (noun)
of mountainous areas of southern Europe	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