A method of language learning based on mutual language practicing by learning partners who speak different languages.

(mineralogy) A mineral form of lanthanum gallium silicate; it may be grown artificially

A sign language, now extinct, which developed on Martha's Vineyard (an island in Massachusetts).

constructed language

What are the languages which you can understand and which you can speak or write in?

Language that refers to people with disabilities by saying people first, for example "people with disabilities", instead of adjectives ("disabled people") and copulas ("he is disabled") that would give primacy to the disability.

A sign language used in South Africa.

A sign language used in Chile.

An indigenous sign language used in Adamorobe, a village of Ghana.

A sign language used in Honduras.