Human language differs from animal communication in its complexity and flexibility, aspects of human communication made possible by unique human biological and genetic features. The complexity of language makes it a powerful tool in shaping human thought, providing categories and metaphors for organizing our information about the world.

The social aspects of language are particularly relative, influencing how children learn languages in various sociocultural contexts as well as how people use language to create speech communities. Language and culture are closely entwined in the evolutionary development and contemporary diversity of human societies.

language — a complex, systematized form of communication involving the use of vocal or gestural units (words or signs) that can be combined and recombined in larger structures (sentences)…. communication — the transfer of information from a sender to a receiver; can be voluntary or involuntary, simple or complex. social aspects of language — particularly relative, influencing how children learn languages in various sociocultural contexts as well as how people use language to create speech communities. metaphor — a linguistic idiom using something concrete to think and talk about something more abstract.