This document discusses how language corpora are analyzed using computers to study large banks of written and spoken language data from sources like novels, plays, scientific articles, newspapers, recorded conversations, and more. It explores how word meaning can be extended through contexts, including analyzing relationships like synonyms, antonyms, hyponyms, and superordinates. It also discusses how words can combine in collocations and lexical/phrasal phrases based on custom. Finally, it lists some methods for extending vocabulary, such as word walls, repeated reading, word books/dictionaries, and games.