noun
A group of people who share a common culture, language, ancestry, or identity. Used in academic, sociological, and everyday contexts.
この地域には複数の民族集団が暮らしている。
Several ethnic groups live in this region.
民族集団の伝統的な衣装を展示している。
They are exhibiting traditional costumes of ethnic groups.
Compound of 民族 (ethnicity) and 集団 (group). The exact historical derivation is uncertain, but the term follows standard Sino-Japanese word formation.