Are there any subtle differences between "somebody" and "someone", or can they be used completely interchangeably? Similarly, can you imagine a situation in which you would prefer "anybody" to ...
Are the words everybody and everyone interchangeable?
When addressing a radio audience, is welcome everybody the appropriate word choice? Why not welcome everyone?
I was wondering if we should use one expression rather than the other? For example the sentence could be: Everybody knows that global warming is an important problem Or Everyone knows that ...