grouse vs fowl

grouse and fowl both are nouns.

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

As verbs, fowl is a hypernym of grouse; that is, fowl is a word with a broader meaning than grouse:

grouse (noun)	fowl (noun)
popular game bird having a plump body and feathered legs and feet	a domesticated gallinaceous bird thought to be descended from the red jungle fowl
flesh of any of various grouse of the family Tetraonidae; usually roasted; flesh too dry to broil	the flesh of a bird or fowl (wild or domestic) used as food

grouse (verb)	fowl (verb)
complain	hunt fowl in the forest
hunt grouse	hunt fowl