If One who is known as more language what the name of that person?

There isn't one specific name for someone who knows many languages. However, here are some options depending on the context:

Formal:

* Polyglot: This is the most common and accurate term for someone who speaks multiple languages fluently.

* Multilingual: This is a more general term for someone who speaks more than one language.

* Linguist: While this generally refers to someone who studies languages, it can also be used for someone who is highly proficient in multiple languages.

Informal:

* Language buff: This term is often used for someone who enjoys learning and speaking different languages.

* Language enthusiast: Similar to "language buff," this term suggests a passion for languages.

* Language wizard: This is a more playful term for someone who is exceptionally good at languages.

The best term to use will depend on the specific situation and the level of formality required.