Is story a pronoun

No, the Word 'story' is a noun, a Word for an account of incidents or events; a Word for a level of a building; a Word for a thing.

A pronoun is a Word that takes the place of a noun in a sentence.

The pronoun that takes the place of the noun 'story' is it.

Examples:

Grandma read the children a story. She read it in a soft, soothing voice.

My apartment is on the second story. I share it with a roommate.