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100

The study of the physical sounds of human speech.

Phonetics

100

The process by which people get to speak a second language.

(Second Language) Acquisition (SLA)

200

 The smallest unit of meaning in a language.

Morpheme

200

The study of how language varies and changes in social groups.

Sociolinguistics

300

The set of rules that dictate the structure of sentences.

Syntax

300

The study of how languages are actually used by speakers as opposed to a set of rigid rules known as prescriptive linguistics. 

Descriptive Linguistics

400

The study of meaning in language.

Semantics

400

The method that focuses on the use of language for communication rather than the formal rules of grammar.

Communicative Language Teaching

500

The study of how context influences the interpretation of meaning.

Pragmatics

500

A group of languages related through descent from a common ancestor.

Language families

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