airwoman vs adult female

airwoman and adult female both are nouns.

Word	Noun	Adjective	Verb	Adverb
airwoman	Yes	No	No	No
adult female	Yes	No	No	No

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

Other hypernyms of airwoman include aeronaut, aviator, flier, flyer, woman.

airwoman (noun)	adult female (noun)
a woman aviator	an adult female person (as opposed to a man)