stunt woman vs woman

stunt woman and woman both are nouns.

Word	Noun	Adjective	Verb	Adverb
stunt woman	Yes	No	No	No
woman	Yes	No	No	No

As nouns, woman is a hypernym of stunt woman; that is, woman is a word with a broader meaning than stunt woman:

Other hypernyms of stunt woman include double, adult female.

stunt woman (noun)	woman (noun)
a female stand-in for movie stars to perform dangerous stunts	women as a class
	an adult female person (as opposed to a man)
	a female person who plays a significant role (wife or mistress or girlfriend) in the life of a particular man