Plumb Design Visual Thesaurus - An exploration of sense relationships within the English language. By clicking on words, you follow a thread of meaning, creating a spatial map of linguistic associations. Roget's Thesaurus - Roget's Thesaurus of English words and phrases. Two, which is derived from the version of Roget's Thesaurus published in 1911. English nouns, verbs, adjectives and adverbs are organized into synonym sets, each representing one underlying lexical concept.
Different relations link the synonym sets.