Grammatical gender and Grammatical category

Grammatical gender noun - 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.

Grammatical category and grammatical gender are semantically related. In some cases you can use "Grammatical category" instead a noun phrase "Grammatical gender".

Grammatical category noun - (grammar) a category of words having the same grammatical properties.

Grammatical gender and grammatical category are semantically related. Sometimes you can replace phrase "Grammatical gender" with "Grammatical category", this phrases are similar.