A corpus is a large collection of authentic texts used for studying language or generating linguistic data. Modern corpora contain texts whose total length is billions or dozens of billions of words. A corpus is usually annotated (=word are labelled with information about the part of speech and grammatical category). The terms corpus and text corpus and language corpus are interchangeable. Using a corpus for any type of linguistic or language oriented work ensures that the outcomes reflect the real use of the language. more on copora»