bionic woman vs adult female

bionic woman and adult female both are nouns.

Word	Noun	Adjective	Verb	Adverb
bionic woman	Yes	No	No	No
adult female	Yes	No	No	No

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

bionic woman: a female human being whose body has been taken over in whole or in part by electromechanical devices
adult female: an adult female person (as opposed to a man)

Other hypernyms of bionic woman include cyborg, woman.

bionic woman (noun)	adult female (noun)
a female human being whose body has been taken over in whole or in part by electromechanical devices	an adult female person (as opposed to a man)