A Lexicon , a list of words together with additional word-specific information, i.e., a Dictionary . In the lexicon of a language, Lexical words or nouns refer to things.
Lexicon , a text editor and word processor MS-DOS program that was extremely popular in the Soviet Union and Russia at the end of 1980s and in 1990s.
Lexicon , a role-playing game using the Wiki software.
Lexicon , a manufacturer of various audio/video components and music production equipment.