Oikonyms in Western, Central, South, and Southeast Asia can be grouped according to various components, reflecting common linguistic and cultural histories. Toponymic study is not as extensive as it is for placenames in Europe and Anglophone parts of the world, but the origins of many placenames can be determined with a fair degree of certainty.One complexity to the study when discussing it in English is that the Romanization of names, during British rule and otherwise, from other languages has not been consistent.