In Bosnian grammar, pronouns and determiners play an important role in sentence structure and meaning. Pronouns are words that replace nouns, while determiners are words that modify nouns.

Bosnian pronouns can be classified into several categories, including personal pronouns (ja, ti, on, ona), possessive pronouns (moj, tvoj, njen), demonstrative pronouns (ovaj, taj), and interrogative pronouns (ko, šta). These pronouns change their form depending on the grammatical case, number, and gender of the noun they refer to. Additionally, there are reflexive pronouns (sebe, se), which are used for actions that the subject performs on itself.

On the other hand, determiners in Bosnian grammar include articles (članci), possessive determiners (moj, tvoj, njegov), demonstrative determiners (ovaj, taj), and interrogative determiners (koji, čiji). These determiners also change their form based on various grammatical features, such as case, number, and gender of the noun they modify.

Understanding the use and function of pronouns and determiners is crucial for constructing meaningful and grammatically correct sentences in Bosnian. Moreover, a thorough knowledge of their case and number changes is essential for proper noun declension.