Here's why:
* Pronoun: A pronoun is a word that stands in for a noun or noun phrase. It avoids repetition and makes sentences more concise.
Examples:
* Noun: "The dog barked."
* Pronoun: "It barked."
* Noun Phrase: "The dog with the brown spots barked."
* Pronoun: "It barked."
Let me know if you have any other questions!