This world-famous Oxford English Dictionary and Thesaurus package contains over 600,000 main entries, offering rich vocabulary coverage, with full treatment of World English, rare, historical, archaic, scientific and technical vocabulary with helpful grammar notes and usage examples. It provides comprehensive, reliable help for all writing needs and crossword solving. The synonyms and antonyms include unusual and specialist vocabulary as well as everyday words, and there is clear labeling of informal, dialect, literary and technical items, including over 400 thematic lists providing information on a wide range of subjects.