An ethnic minority, by definition, is a group that differs in racial, national, cultural or religious characteristics from the dominant group in a society.
A race is a group of people who share specific physical, inherited traits that differentiates them from the rest of the society.
A race or ethnicity is also characterized by its cultural, national, religious or linguistic origin.
A stereotype is a widespread social construct or conviction about certain aspects of a particular group. It is an over generalized belief about a group.
In sociology, assimilation refers to the social and cultural integration or acceptance of a minority or marginalized group into society.