laundress vs adult female

laundress and adult female both are nouns.

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

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

Other hypernyms of laundress include washer, woman.

laundress (noun)	adult female (noun)
a working woman who takes in washing	an adult female person (as opposed to a man)