the state of being male or female (typically used with reference to social and cultural differences rather than biological ones).

"traditional concepts of gender"

Grammar
(in languages such as Latin, French, and German) each of the classes (typically masculine, feminine, common, neuter) of nouns and pronouns distinguished by the different inflections which they have and which they require in words syntactically associated with them. Grammatical gender is only very loosely associated with natural distinctions of sex.