An ethnicity or ethnic group is a group of people who identify with each other on the basis of perceived shared attributes that distinguish them from other groups. Those attributes can include a people of a common language, culture, common sets of ancestry, traditions, society, religion, history, or social treatment. The term ethnicity is sometimes used interchangeably with the term nation, particularly in cases of ethnic nationalism. Ethnicity may be construed as an inherited or societally imposed construct. Ethnic membership tends to be defined by a shared cultural heritage, ancestry, origin myth, history, homeland, language, dialect, religion, mythology, folklore, ritual, cuisine, dressing style, art, or physical appearance. Ethnic groups may share a narrow or broad spectrum of genetic ancestry, depending on group identification, with some groups having mixed genetic ancestry.