What is race? What is ethnicity? Is there a difference?

A lot of bias circles around race. But what is race? What is ethnicity? Aren’t they the same? Race and ethnicity are often used interchangeably, but have different meanings. Race is an externally-imposed categorization based on certain physical features such as skin color and hair texture, a common ancestry, and cultural and moral attributes. Ethnicity is a self-defined group identity based on shared kinship, history, and culture.