I've found long definitions, I hope it will help you
« Literary theory” is the body of ideas and methods we use in the practical reading of literature. By literary theory we refer not to the meaning of a work of literature but to the theories that reveal what literature can mean. Literary theory is a description of the underlying principles, one might say the tools, by which we attempt to understand literature.
The definition of civilization refers to a society or group of people or the process of achieving a higher state of social development. An example of civilization is an industrial society that has arts, sciences, and machines such as cars.
