Koiné is a term used to refer to a simplified form of a language that is used as a lingua franca.

The koinés in the market are very expensive.

Koinéization is the process of standardizing a language or dialect.

Koinéisation is the process of standardizing a language or dialect.

The koinéisations of different dialects have led to the development of a common language.

The koinéizations of the language are evident in its vocabulary and grammar.