As a language is spoken by many people for a long time , there are some differences within the language depending on the locality and community. Such case differences in a language are called dialects. Linguists have explained the formation of dialects in a language based on locality , community , ethnicity , sex , age , and so on. Regional and community dialects are clearly set in the Tamil language. That is , there are differences between the Tamil spoken in Chennai, the Tamil spoken in the country, the Tamil spoken in the Cauvery Delta and the Kongu Tamil. Branch studies are being carried out based on such differences .
Initially, the dialectic was meant to be a regional case study. The development of linguistics then became part of the dialectical dialectic dialect. So the regional dialect of the study by the avvattarattirke the case of words collected local euphemism vocabulary uruvakkappattana . So the Tamil scholarly tradition, created a regional case collakaratikalaip about the article aykinratu .