How is Othello desfined as an "other?"

In class today we began a discussion about how Othello is defined as an "other" or outsider. There is the obvious example that he is a moor. However, the separation goes deeper than this. Whereas Othello is a military man, many of the other people he deals with are politicians. These people are much smoother than Othello, and it shows in their relative language. Can anybody think of other ways he is separated?