What is linguistics?

Some basics: What is linguistics and how is it used? What is linguistics?
Linguistics is the study of language – not just particular languages, but the system of human communication. Some of the basic issues of this field are?

• What is language? How is it organized?
• How is it analyzed? How are its units discovered and tested?
• Where is language stored and processed in the brain? How is it learned?
• What do all languages—including nonvocal systems of communication (e.g. writing and sign languages)—have in common? What do these properties show us about human cognition?
• How did language originate? What does it have in common with animal communication? How is it different?
• How many distinct families or stocks of languages are there in the 6000 or so known languages today? What original languages did they come from? How have they changed over time?
• What does dialectal and social variation show us about the use of language? How has this diversity affected issues of social, political, and educational policy?
• What is the relationship between language and culture? Language and thought?

What are some of the branches of linguistics? applied linguistics: application to areas such as speech pathology, reading, social work, missionary work, translation, dictionary compilation, language teaching, error analysis, computer language processing.
dialectology: investigation of regional variation in language.
ethnolinguistics (anthropological linguistics): investigation of the relation between a people's language and culture.
historical (diachronic) linguistics: study of language change and evolution.
morphology: study of word formation and inflection.
neurolinguistics: research into the specific location of language in the brain.
paralinguistics: study of nonverbal (auxiliary) human communication.
philology: study of how language has been used in literature, especially in older manuscripts.
phonetics: description of how speech sounds are articulated and heard.
phonology: study of how languages organize the units of speech into systems.
pragmatics: study of the strategies people use to carry out communicative business in specific contexts.
psycholinguistics: investigation of language as cognitively-based behavior; how it is acquired and processed.
second language acquisition (SLA): study of how older learners acquire language, and of ways to improve it.
sociolinguistics: study of social variation in language: the relation between social structure and language usage, and of social issues involving language.
semantics: study of word and sentence meaning.
syntax: study of the structure of sentences and of underlying principles for generating and processing them.
How is linguistics applied? Many students find linguistics useful because it broadens and deepens their understanding of related fields: languages and literature (English and foreign), social sciences (especially anthropology, sociology, and psychology), education, philosophy, communication... Those who obtain degrees in linguistics often proceed to careers in:

• foreign language teaching
• instructional technology
• ESL (teaching English as a second language)
• teaching and research in general linguistics (phonology, syntax...)
• translation (human and machine-assisted)
• speech pathology and audiology.                                                                  (Totally quoted from http://www.wfu.edu/linguistics/Some_basics.html)