What pronoun emphasizes a noun or in the same sentence?

The pronoun that emphasizes a noun in the same sentence is "itself".

Here are some examples:

* The cat itself chased the mouse. (Emphasizes the cat)

* The book itself was interesting. (Emphasizes the book)

* The house itself was beautiful. (Emphasizes the house)

"Itself" is a reflexive pronoun that is used to emphasize the noun it refers to. It is often used to distinguish the noun from other similar things.