There are many link-languages spoken in different parts of the world.

English and Swahili are contact languages in Kenya.

English and German are daughter languages.

Many immigrants in the United States speak their heritage languages at home.

Many indexing languages are used in information retrieval systems.

Language assistants play a crucial role in language learning.

Language continua are a spectrum of languages that gradually change from one to another.

Language swaps are a great way to practice speaking different languages.

There are many liturgical languages spoken in different parts of the world.

There are many matrix languages used in computer programming.