Its thesaurus was based on multiple versions of "Roget's Thesaurus". Dictionary is an application that includes an in-built dictionary and thesaurus. It is a compilation that includes "Oxford Dictionaries of English and Concise Oxford Thesaurus". It is a compilation of both "Concise Oxford American Dictionary" and "Concise Oxford American Thesaurus". A version using synonyms from Roget's Thesaurus exists. WordNet can thus be seen as a combination and extension of a dictionary and thesaurus. The "Erya" has been described as a dictionary, glossary, synonymicon, thesaurus, and encyclopaedia. Colors listed as synonyms by HP Labs' "Online Color Thesaurus". Draw includes a spellchecker, autocorrect, thesaurus, hyphenation mode and color replacing. A codice 3 is analogous to a vocabulary, thesaurus, or other way of organizing concepts. Well known thesauri include the Art and Architecture Thesaurus and the ERIC Thesaurus. Other resources used for disambiguation purposes include Roget's Thesaurus and Wikipedia. These are used as source material to create entries for each word in the thesaurus. CT can be characterized as a multilingual thesaurus with an ontological foundation. EuroVoc is a multilingual thesaurus maintained by the Publications Office of the European Union.