Differences in analyses can arise between synchronic and diachronic approaches. Hopper and Traugott state that the cline of grammaticalization has both diachronic and synchronic implications. Some recent scholarship questions the practicality of this synchronic/diachronic distinction. It may sometimes be useful to distinguish between diachronic and synchronic museums. The linguist's approach to these can be diachronic or synchronic. This is a synchronic valuation, not a diachronic one. Evolutionary and historical linguistics are renamed as diachronic linguistics. Comparative historical linguistics studies the evolutions languages and takes a diachronic view of the lexicon. Historical linguistics is typically a diachronic study. The study of lexical changes forms the diachronic portion of the science of onomasiology. Following several diachronic phonological changes, this became . However, these labels indicate a diachronic correspondence rather than a phonetic one. Synchronic and diachronic approaches can reach quite different conclusions. In this sense, it is a diachronic approach to interpretation of the Bible. Introspection does not reveal any diachronic substrate remaining unchanged throughout life.