female person vs somebody

female person and somebody both are nouns.

Word	Noun	Adjective	Verb	Adverb
female person	Yes	No	No	No
somebody	Yes	No	No	No

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

female person: a person who belongs to the sex that can have babies
somebody: a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential

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

female person (noun)	somebody (noun)
a person who belongs to the sex that can have babies	a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential