Look up a word, and get back not only defiinitions, but relevant keywords, and related terms galore. For semantics, I got: Keywords: Pragmatic, Syntax, Linguistic, Sentence, Phonology Related Terms: Wordnet , Dictionary, Vocabulary, Lexis, Ambiguity..
Vocabularies for every academic, business, professional field, plus taxonomies for "Asian Vegetables," "General Knowledge," "Forbidden Drugs," and "Leadership."