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LINGUISTIC
Linguistic competence is a term used by speech experts and anthropologists to describe how language is defined within a community of speakers. This term applies to mastering the combination of sounds, syntax and semantics known as the grammar of a language. People with such competence have learned to utilize the grammar of their spoken language to generate an unlimited amount ofstatements. This term is distinct from the concept of communicative competence, which determines what is socially appropriate speech.

The idea of linguistic competence was first developed by linguist Noam Chomsky in the mid-1960s. Chomsky developed several theories aimed at describing how language was acquired and functioned within a culture. Linguistic competence is part of a larger theoryof linguisticbehavior known as universal grammar, which explains language as a natural ability with which children are born and which becomes refined as they develop. This theory lies in contrast with the idea that speech is strictly a learned behavior.

Chomsky’s theory of generative grammar contained several key concepts about language, including linguistic competence, linguistic performance andcommunicative competence. Chomsky defined linguistic competence as an idealized understanding of the rules and construction of a given language. This includes the distinct sounds used in the language, the combination of these sounds, the creation of sentences and the interpretation of a sentence. Once a speaker masters this set of rules, he or she can use this grammar to produce new phrases that will beunderstood by all speakers of the same language.

Linguistic performance and communicative competence are concepts related to linguisticcompetence but are applied to language as it is actually used rather than as an ideal construct.Linguistic performance is the practical application of speech with the grammatical flaws and mistakes that exist among real-world speakers. This allows speakers tounderstand each other despite grammatical flaws and differences in dialect. Communicative competence refers to the rules that govern the kinds of speech allowed within the cultural context.

Chomsky’s theories sparked debate among linguists and have continued to influence debate around the acquisition and use of language. Some linguistic theorists see linguisticcompetence as a learned behaviorrather than an innate function of the human brain. Other researchers ignore Chomsky’s separate definitions of competence and performance and study language as a practical function of human behavior.
The concept of linguistic competence remains an important aspect of linguistic theory and education. It is a subject touched on by linguistics courses within the English curriculum and is dealt with indepth in linguistic and cultural anthropology. Linguistic researchers and theorists continue to study and refine this concept through fieldwork and clinical investigation.

PRAGMATIC
This is a part of communicative competence that involves being able to use language in interpersonal relationships, taking into account such complexities as social distance and indirectness. 
As an example ofindirectness, consider the conversation:
A: How was the movie?
B: Well, the sound track was ok.
A second language learner may take that at face value not having the essential pragmatic knowledge that B is avoiding a direct answer because the direct answer is that the movie wasn't good.

The notion of pragmatic competence originates from pragmatics, a subfield in linguistics. Crystal (in Kasper,1997) defines pragmatics as “the study of language from the point of view of users, especially of the choices they make, the constraints they encounter in using language in social interaction and the effects their use of language has on other participants in the act of communication.” In relation to this, Chomsky defined pragmatic competence as the “knowledge of conditions and manner of...