brunette vs somebody

brunette and somebody both are nouns.

Word	Noun	Adjective	Verb	Adverb
brunette	Yes	Yes	No	No
somebody	Yes	No	No	No

As nouns, somebody is a hypernym of brunette; that is, somebody is a word with a broader meaning than brunette:

brunette: a person with dark (brown) hair
somebody: a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential

Other hypernyms of brunette include individual, mortal, person, someone, soul.

brunette (noun)	somebody (noun)
a person with dark (brown) hair	a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential

brunette (adjective)	somebody (adjective)
marked by dark or relatively dark pigmentation of hair or skin or eyes