Is there a diffrerence between racism and classism?

Racism is when there is an ascosiation with something negative or prejudice against a person/people that is based totally or mostly on their race. Classism has the exact same idea to it, but you just have to eliminate race from the definition. Although both of these definitions include groups of people being judged solemly from those traits, racism and classism are not the same thing. Race and class may be interwined with each other, escpecially in a very diverse country, but it is still definetly not the same thing. They are two different issues that take similar form when it comes to prejudice. If we classify those two as the same thing, then we could also add many more to the list. I do not know the word for this type of prejudice (all I can think of is "shallow-ism"), but what about people who don't want to associate with someone because they look unattractive to them? Or what about people who don't want to associate with people who don't seem as smart as them? I don't think there are words for those types of prejudice yet, but I am sure there will be. That is why it is important to recognize the difference between the different types of prejudice. All of those are a completely different topic that can each be discussed in depth.