Noun

1. Gender - grammatical gender is a specific form of noun class system in which the division of noun classes forms an agreement system with another aspect of the language

1.1. Person nouns (a strong member)

1.1.1. The feminine gender (mother)

1.1.2. The masculine gender (father)

1.2. Non-person nouns (a weak member)

1.2.1. The neuter gender (cat)

2. Case - the immanent morphological category of the noun manifested in the forms of noun declension and showing the relations of the nounal referent to other objects and phenomena.

2.1. Common case - unfeatured form of the noun (cat)

2.2. Possessive case - the possessive case shows ownership (cat's)

3. Number - it refers to the grammatical contrast between singular (the concept of one) and plural

3.1. Singular (cat)

3.2. Plural (cats)