Nouns play a vital role in Urdu grammar, as they are the building blocks of sentences. In Urdu, nouns are typically categorized into two genders – masculine (muzakar) and feminine (monas). This classification is based on biological gender or perceived characteristics.

Urdu nouns also have singular and plural forms. Pluralization is usually achieved by adding suffixes to the singular form, such as -aat, -oon, -ain, etc. However, there are some irregular plurals that do not follow this pattern.

Nouns in Urdu also have different cases, which determine their function in a sentence. The nominative case is used for subjects, the accusative case for direct objects, and the dative case for indirect objects. Different case endings are added to nouns to indicate these functions.

Furthermore, Urdu nouns can be modified by additional elements, such as adjectives or possessive pronouns, to provide more information or clarify their relationships. These modifiers agree with the noun they modify in terms of gender, number, and case.

Understanding the theory of nouns in Urdu grammar is crucial for constructing meaningful and grammatically correct sentences.