Lexicology is the study of words and vocabulary in language. It examines properties of words like origin, development and current usage. Lexicology is concerned with individual words, phrases and morphemes. There are two main types - general lexicology which studies vocabulary irrespective of language, and special lexicology which describes the vocabulary of a specific language. Lexicology is connected to other linguistic fields like grammar, phonetics, stylistics and cultural studies. Word meaning has different types including conceptual, associative, stylistic and grammatical. Phraseological units and free word groups are also studied in lexicology.