Lexicon

A lexicon is a word list with information about the words. I.e. it is a source of lexical information. Dictionaries and things like dictionaries are lexicons. in computational linguistics some examples include

• Polarity lexicons: words tagged with positive or negative sentiment values. some writing about this in Velikovich_et_al,_NAACL_2010.
• Thesaurses
• WordNet-style lexicons: synonym and hypernym relations between words
• Concept-ish knowledge bases: maybe lexicons are a special case of this. RTW KB and Cyc are examples.