blond vs adult female

blond and adult female both are nouns.

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

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

Other hypernyms of blond include blond person, woman.

blond (noun)	adult female (noun)
a light grayish yellow to near white	an adult female person (as opposed to a man)
a male person with fair skin and hair

blond (adjective)	adult female (adjective)
being or having light colored skin and hair and usually blue or grey eyes