A dictionary is a list of words with their definitions, a list of characters with their glyphs, or a list of words with corresponding words in other languages. In a few languages, words can appear in many different forms, but only the lemma form appears as the main word or headword in most dictionaries. Many dictionaries also provide pronunciation information grammatical information word derivations, histories, or etymologies illustrations usage guidance and examples in phrases or sentences. Dictionaries are most commonly found in the form of a book. Some dictionaries are also found in electronic portable handheld devices. Most dictionaries are produced by lexicographers. Dictionaries vary wildly in size and scope. A dictionary that attempts to cover as many words from a particular speech community as possible is called a maximizing dictionary the Oxford English Dictionary, whereas a dictionary that attempts to cover only a limited selection of words from a speech community is called a minimizing dictionary a dictionary containing the 2000 most frequently used words in the English language.