Is there any language with different words for we/us/our to denote whether it includes the hearer or not?

European languages generally don't. The only other group of languages with which I am familiar, namely Bantu, also does not. I'm just wondering if there's any language that does. Also if the language has conjugation, does it have it's one special ways to conjugate this second form of "us"? Is it really a separate concept throughout in such language, just like we and you are separate concepts?