Language is a complex system of communication that is unique to humans, allowing them to encode and decode infinite amounts of information. It is defined by many scholars as a symbolic system based on arbitrary conventions that is constantly evolving and modifiable. Language is non-instinctive, creative, and a form of social behavior that is species-specific to humans. It differs from animal communication in its use of discrete symbols to convey infinite messages over distances, as well as its open-ended, modifiable nature.