Sino-Tibetan is not a major language family, but rather a family of languages spoken in East and Southeast Asia.

Language evolution, language drift, and language change are all terms used to describe the process by which languages change over time.

The lexical diffusion method is not a method for reconstructing proto-languages, but rather a method for studying the spread of words between languages.

Language merger, language fusion, and language amalgamation are all terms used to describe the process by which two or more languages merge into a single language.

Language shift is not a type of language contact, but rather a process by which one language replaces another language in a community.

Ethnolinguistics is the study of the relationship between language and culture.

Lexical typology is not a type of language typology, but rather a type of linguistic analysis that focuses on the structure of words.

Historical linguistics, comparative linguistics, and diachronic linguistics are all terms used to describe the study of the history of a particular language.

Lexical change is not a type of language change, but rather a type of linguistic analysis that focuses on the structure of words.

Language death, language extinction, and language obsolescence are all terms used to describe the process by which a language loses its speakers.

Language preservation is not a type of language revitalization, but rather a process by which a language is maintained in its current state.

Neurolinguistics is the study of the relationship between language and the brain.

Autism is not a type of language disorder, but rather a neurodevelopmental disorder that can affect language development.

Sociolinguistics is the study of the relationship between language and society.

Idiom is not a type of language variation, but rather a type of linguistic expression that is peculiar to a particular language or region.