grammatical category
syntactic category

Indeed, it is not surprising that a member of this particular grammatical category should have been brought into play here.

English can therefore be said to have a grammatical category of number.

Tense and aspect are grammatical categories in a large number of languages.

Voice is a grammatical category which defines the relationship between a verb and its subject.

Gender is probably the most puzzling and least well understood of the grammatical categories.

Gender is a basic grammatical category in the languages of the world.

Not all languages have number as a grammatical category.

However, not every language has a grammatical category of number.

The use of grammatical categories rather than individual words means that the number of different states is much smaller.

More specifically, a grammeme is a value of a grammatical category.