The Colour Oxford English Dictionary offers the most accurate and up-to-date coverage of essential, everyday vocabulary, with 90,000 words, phrases, and definitions based on evidence from the Oxford English Corpus, a unique databank comprising hundreds of millions of words of English. Definitions are easy to understand, given in a clear, simple style, and avoiding technical language. There are also hundreds of notes on spelling and grammar. The centre section gives guidance on the use of good English, with information on spelling and grammar. The centre section gives guidance on the use of good English, with information on spelling, punctuation, word classes, and word formation.