Exits: "Exits" is a noun that refers to the physical means or routes through which one can leave or exit a place, such as a building, room, or location. It indicates the way out or the act of leaving. For example: "There are multiple exits in the building."

Exist: "Exist" is a verb that describes the state of being, or the presence, of something or someone. It signifies the actual or real existence of an entity or the occurrence of a phenomenon. For example: "Unicorns do not exist in reality."

In summary, "exits" is a noun referring to the ways out, while "exist" is a verb indicating the state of being or the presence of something.