Spirit
Definition
This is the concept of a supernatural entity that occupies and influences the same world as that inhabited by humans. Although the term may be applied to a deity, it refers mostly to those beings that have lesser powers and limited scope in their activities. All cultures have spirits in their mythology and folklore to some degree. Their character, activities, and relationship to humans and supreme deities form the rich heritage of beliefs in society.
Source: Spirits, Fairies, Leprechauns, and Goblins Encyclopedia