The pursuit of lexicography's divided into two related disciplines: Practical lexicography's the art or craft of compiling, writing and editing dictionaries. Theoretical lexicography's the scholarly discipline of analyzing and describing the semantic, syntagmatic and paradigmatic relationships within the lexicon (vocabulary) of a language, developing theories of dictionary components and structures linking the data in dictionaries, the needs for information by users in specific types of situa… (More on Lexicography)