Ethnic minority and Ethnic group

Ethnic minority noun - A group that has different national or cultural traditions from the majority of the population.

Ethnic group and ethnic minority are semantically related. In some cases you can use "Ethnic group" instead a noun phrase "Ethnic minority".

Ethnic group noun - People of the same race or nationality who share a distinctive culture.

Ethnic minority and ethnic group are semantically related. You can use "Ethnic minority" instead a noun phrase "Ethnic group".