A constructe or artificial language — known colloquially or informally as a conlang — is a language whose phonology, grammar, and/or vocabulary have been consciously devised by an individual or group, instead of having evolved naturally. There are many possible reasons to create a constructed language: to ease human communication (see international auxiliary language and code); to bring fiction or an associated constructed world to life; linguistic experimentation; celebration of one's aesthetic tastes in language; and language games.