The idea of race refers to superficial physical differences that a particular society considers significant.
Racial groups are sociologically, rather than biologically, different; that is to say, there is no "race" gene or set of genes.
Many governments provide legal definitions of race for purposes of census-taking and calculating budgets for governmental programs.
Most social scientists and biologists believe race is a social construct affecting sociopolitical, legal, and economic contexts.
Racism is the belief that different traits of racial groups are inherent and justify discrimination.