What is comon?

It seems like there might be a typo in your question. Did you mean to ask for information about "common" instead? If so, here is some information:

"Common" is an adjective that is used to describe something that is widespread, ordinary, or familiar. It can also refer to something that is shared or belongs to more than one person or group. For example, common household items, common sense, common interests, etc.

In a more specific context, "common" can also refer to areas of land or facilities that are shared by a community, such as a common area in a neighborhood or a common room in a building.

Overall, the term "common" is often used to denote things that are typical, usual, or shared among a group of people.