female vs gender

female and gender both are nouns.

Word	Noun	Adjective	Verb	Adverb
female	Yes	Yes	No	No
gender	Yes	No	No	No

female (noun)	gender (noun)
an animal that produces gametes (ova) that can be fertilized by male gametes (spermatozoa)	the properties that distinguish organisms on the basis of their reproductive roles
a person who belongs to the sex that can have babies	a grammatical category in inflected languages governing the agreement between nouns and pronouns and adjectives; in some languages it is quite arbitrary but in Indo-European languages it is usually based on sex or animateness

female (adjective)	gender (adjective)
being the sex (of plant or animal) that produces fertilizable gametes (ova) from which offspring develop
for or pertaining to or composed of women or girls
characteristic of or peculiar to a woman