Explain the concept of pronoun substitution.

Explain the concept of pronoun substitution.

Pronoun substitution is a grammatical concept where a pronoun is used to replace a noun or noun phrase in order to avoid repetition. It allows for smoother and more concise communication by referring back to a previously mentioned noun or noun phrase. This substitution can occur within a sentence or across multiple sentences, and it helps to maintain clarity and coherence in writing or speech.