Define race and ethnicity. What is the difference between the two?

Race has to do with a person's physical characteristics, such as color of skin and eyes, type of hair, etc.; whereby Ethnicity has to do more with the cultural factors of the person, such as language and nationality; in other words ethnicity factors have more to do with culture in a given geographic region.

race is some ones physical characteristics such as eye color or height

while ethnicity is you culture, ancestry and language.