General linguistics, which relates itself to the research of other areas, studies the basic concepts, theories, descriptions, models and methods applicable in any linguistic study.

D（）is one of the design features of human language which refers to the phenomenon that language consists of two levels: a lower level of meaningless individual sounds and a higher level of meaningful units.

Human capacity for language has a g（）basis, but the details of language have to be taught and learned.

Language

Syntax is different from morphology in that the former not only studies the morphemes, but also the combination of morphemes into words and words into sentences.

Linguistics

A scientific study of language is based on what the linguist thinks.

Pragmatics is different from semantics in that pragmatics studies meaning not in isolation, but in context.

Syntax

A diachronic study of language is the description of language at some point in time.