Findings in linguistic studies can often be applied to the settlement of some practical problems. The study of such applications is generally known as a（）linguistics.

Langue refers to the a（）linguistic system shared by all the members of a speech community while the parole is the concrete use of the conventions and application of the rules.

In the study of linguistics, hypotheses formed should be based on language facts and checked against the observed facts.

Syntax

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.

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

Semantics

Language

Morphology studies how words can be formed to produce meaningful sentences.

Both semantics and pragmatics study meanings.