Definition of language :
1. A race, as distinguished by its speech.
2. Any means of conveying or communicating ideas; specifically, human speech; the expression of ideas by the voice; sounds, expressive of thought, articulated by the organs of the throat and mouth.
3. The characteristic mode of arranging words, peculiar to an individual speaker or writer; manner of expression; style.
4. The expression of ideas by writing, or any other instrumentality.
5. The forms of speech, or the methods of expressing ideas, peculiar to a particular nation.
6. The inarticulate sounds by which animals inferior to man express their feelings or their wants.
7. The suggestion, by objects, actions, or conditions, of ideas associated therewith; as, the language of flowers.
8. The vocabulary and phraseology belonging to an art or department of knowledge; as, medical language; the language of chemistry or theology.
9. To communicate by language; to express in language.
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grammar (part of speech: noun)
language (part of speech: noun)