|we vs us||
We is a pronoun used as the subject of a verb, to mean the person communicating and at least one other person.
We can be inclusive:-
Us is also a pronoun, but it is used as the object of a verb or a preposition to mean the person communicating and at least one other person.
In the UK we often use it to refer to a large group of people that includes the person communicating.
Many linguists will argue that it should be "We Brits", as in "We few, we happy few..." (thanks Shakespeare), and they have a point, but when we say "us" we sort of mean "all of us".
!Note - in the UK "us" is also a very informal way of saying "me".