Many people use the word "utilitarianism" to refer to what is properly named "consequentialism".
I tend to do that.
What is the difference? According to Wikipedia, Egoism and Ethical Altruism are Consequentialist but not Utilitarian. I think it might have something to do with your utility function involving everyone equally, instead of ignoring you or ignoring everyone but you.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.