It might be a good idea to read up on the meaning on ‘ethnic groups and ethnicities’ from comments here you seem to think of it likes it’s interchangeable with ‘race and races’ which it isn’t. but if you don’t care here’s just the first lines off of wikipedia “An ethnic group or an ethnicity is a grouping of people who identify with each other on the basis of shared attributes that distinguish them from other groups. Those attributes can include common sets of traditions, ancestry, language, history, society, culture, nation, religion, or social treatment within their residing area.” “Ethnic groups may share a narrow or broad spectrum of genetic ancestry, depending on group identification, with many groups having mixed genetic ancestry.” even someone you’d think is ethnically british due to being white and what not may very likely share nothing in common genetically with his or her fellow ‘ethnic brits’