Race means to speed or move quickly. A race is a contest to see who is moving the quickest. Race can also mean genetic grouping––if you are reading this, chances are you're a member of the "human race."
After watching an exciting horse race, your heart may be racing, meaning your pulse is moving fast. You may find yourself racing through your day if you have too much to do, or you might race a friend home from school to see which is fastest, walking or taking the bus. On a form that asks you your race, you will often be prompted with racial categories, such as Caucasian, African-American, or Native American.