A "corpus" refers to a collection of written or spoken texts that are used for linguistic analysis. It can include various forms of language data, such as books, articles, speeches, or conversations. Researchers often use a corpus to study language patterns, grammar, and vocabulary in different contexts. In the field of linguistics, a corpus can be categorized into different types, such as corpus linguistics, which focuses on the systematic study of language through large collections of texts. Additionally, specialized corpora may be created for specific languages or subjects, aiding in the understanding of language use in particular domains.