4.3 How Can We Describe Language?

Recall the language universal stating that all languages change over time. In fact, it is not possible to keep them from doing so. How and why does this happen? The study of how languages change is known as historical linguistics. The processes, both historical and linguistic, that cause language change can affect all of its systems: phonological, morphological, lexical, syntactic, and semantic.

Historical linguists have placed most of the languages of the world into taxonomies, groups of languages classified together based on words that have the same or similar meanings. Language taxonomies create something like a family tree of languages. For example, words in the Romance family of languages, called sister languages, show great similarities to each other because they have all derived from the same “mother” language, Latin (the language of Rome). In turn, Latin is considered a “sister” language to Sanskrit (once spoken in India and now the mother language of many of India’s modern languages, and still the language of the Hindu religion) and classical Greek. Their “mother” language is called “Indo-European,” which is also the mother (or grandmother!) language of almost all the rest of European languages.