what is the definition of the following key terms1 Mother tongue 2 L1&L23 Target language4 Foreign language5 Nonnative language 6 Heritage language7 Foreign language learning 8 Second language learnin

Mother tongue: The language that a person learns from birth or acquires naturally in their early childhood, typically from their parents or immediate family.

L1&L2: L1 refers to the first language or mother tongue, while L2 refers to the second language that a person learns.

Target language: The language that a learner is specifically aiming to acquire or become proficient in.

Foreign language: A language that is not commonly spoken in a specific region or country, and is typically learned as an additional language.

(Non)native language: The native language refers to the language that a person learns as their first language, while a non-native language refers to any language that is learned after the first language.

Heritage language: A language that is associated with a person's cultural or ethnic background, but may not be their first language or the language they primarily use.

Foreign language learning: The process of learning and acquiring a language that is not commonly spoken in a specific region or country.

Second language learning: The process of learning and acquiring a language that is not the individual's native language.

Monolingual: A person who speaks only one language.

Bilingual: A person who speaks two languages fluently.

Multilingual: A person who speaks multiple languages fluently.

Learning: The process of acquiring knowledge or skills through study, experience, or teaching.

Acquisition: The process of naturally and unconsciously acquiring a language, typically through immersion and exposure, without formal instruction.

Interlanguage: The language system that learners construct as they are in the process of learning a second language, which may contain elements of both the first language and the target language.

ESL/EFL: ESL stands for English as a Second Language, which refers to the teaching and learning of English in a country where it is not the primary language. EFL stands for English as a Foreign Language, which refers to the teaching and learning of English in a country where it is not commonly spoken.