Corpus linguistics is the study of language based on real-world text samples, known as corpora. These corpora can include written texts, spoken language, or a combination of both, allowing researchers to analyze how language is used in various contexts. By examining large collections of language data, corpus linguistics helps identify patterns, trends, and variations in language use. This approach can reveal insights into grammar, vocabulary, and language change over time, making it a valuable tool for linguists, educators, and language learners alike.