looker vs adult female

looker and adult female both are nouns.

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

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

Other hypernyms of looker include woman.

looker (noun)	adult female (noun)
a very attractive or seductive looking woman	an adult female person (as opposed to a man)
a close observer; someone who looks at something (such as an exhibition of some kind)