A grammatical category isa system opposed to each other grammatical forms with similar values. Members of the same grammatical category are the general grammatical meaning and differ in connotation. Grammatical categories are subdivided into morphological and syntactic. Among the morphological categories are distinguished, for example, the kind of grammatical categories, tense, mood, person, gender, number, case; consistent expression of these categories are characterized by the whole grammatical word classes (parts of speech). Grammatical categories in different languages with a strong word formation, ie such members can be represented by the forms of the same word within its paradigm (for example, in the Russian language - the tense, the inclination, the number of the verb, number, case, gender adjectives degrees of comparison). Word changing, ie such that the members can not be represented forms of the same word (for example, in the Russian language - the genus and animation/inanimation nouns). Also, grammatical categories are distinguished as: