male vs gender

male and gender both are nouns.

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

male (noun)	gender (noun)
an animal that produces gametes (spermatozoa) that can fertilize female gametes (ova)	the properties that distinguish organisms on the basis of their reproductive roles
a person who belongs to the sex that cannot 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

male (adjective)	gender (adjective)
being the sex (of plant or animal) that produces gametes (spermatozoa) that perform the fertilizing function in generation
for or pertaining to or composed of men or boys
characteristic of a man