Racism vs Racialism

In Medical Apartheid, I was really drawn to the section where they distinguished the definitions of racism and racialism. On page 35, the book defined racists to "believe in an innate, usually immutable inferiority." It then defines that racialists "believe that race or skin color does signal inherent attributes but that the attributes in question are simply different, neither negative no inferior." The book states that often people misuse the two definitions. In my opinion, I believe racialism is similar to the definition of multiculturalism today. Like racialism, someone who is multicultural believes that everyone is different and that those differences should be embraced and recognized. Multiculturalism wants to celebrate the differences, not by saying that one group is better than the other, but by simply stating that those differences are there and that we should not ignore them nor be colored blind. I do have to admit that I do prefer the term multicultural. I believe the term racialism has too much of a negative connotation.