The scientific study of language and its structure, including the study of morphology, syntax, phonetics, and semantics. Specific branches of linguistics include sociolinguistics, dialectology, psycholinguistics, computational linguistics, historical-comparative linguistics, and applied linguistics.
The method of human communication, either spoken or written, consisting of the use of words in a structured and conventional way.
The whole system and structure of a language or of languages in general, usually taken as consisting of syntax and morphology (including inflections) and sometimes also phonology and semantics.
Where do some of our words and phrases come from? What words have changed in meaning? What words do we no longer use? Languages are ever evolving, from gaining new words from other cultures (zeitgeist), to words being created (youthquake), and to words being left unused (fortnight). After moving, combining, and cleaning up the linguistics and reference sections I found plenty of words I want to start adding to my vocabulary, but now it is time for a bumper. Here are some books that dig deep into words and language and the history behind them.