A pronoun is a word used in place of a noun.

I can communicate with her telepathically.

He is suffering from symptoms of abulia.

This building is made of granite.

Her necklace had a beautiful cat's eye stone.

Hiroshi, true to his name meaning prosperous, runs a thriving company.

He lied to cover his shame.

Where is the lid for this pot?

Qi is my best friend.

He is coughing because of a cold.