Ethnic group refers to a group of people who are bound by a common trait. The people in the group identify with one another based on a common trait. It may be anything from nationality, language, religion, ancestry or even physical appearance. One may belong to a particular ethnic group as a result of birth or due to communication or interaction with one another. The common factor may pertain to belonging to a particular nation or may even narrow down to a specific state or region. The word ethnic or ethinicity comes from the Greek word ?Ethonos? which means nation. The ethnic group may be one which is based on a common trait that includes people from different places or may be one that is narrowed limiting itself to people from a small area or region.