Definition of ethnics:
(adj) :
Of or relating to a group of people having common racial, ancestral, national, religious or cultural origins.
(adj) :
Characteristic of a foreign or a minority group's culture.
(n) :
An ethnic person, especially a foreigner or member of an immigrant community.
(adj) :
Representative of a folk or traditional mode of expression.
(adj) :
(historical) Heathen, not Jewish, Christian, or Muslim.
(n) :
(in classical scholarship) The demonym of an Ancient Greek city.