Englishfor English speakers
ethnic
Adjective
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An ethnic group is a group related by race, culture, and/or nationality.
The Irish are the largest, but least visible, ethnic minority in Britain.
The school has students from over 20 different ethnic backgrounds.
dialect
Noun
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A dialect is a version of a language. People who speak different dialects might sound different or word meanings might be a little different. People speaking different dialects talk similar enough that they can understand each other. (If people cannot understand each other, they speak different languages, not different dialects.)
The dialect of the southern United Stage is quite different from that of the north.