We tend to see the words Somebody & Someone, Nobody & No-one, Anybody & Anyone, and Everybody & Everyone used as alternatives for each other.
I would like to propose that they are not, in fact, interchangeable.
My thinking starts from my belief that we are all infinite beings who have chosen (for reasons we can’t yet grasp) to have a Human experience. I somewhat inelegantly refer to our corporeal bodies as the “meat-suit” – it’s just a wrapper that makes it more convenient when interacting with all the other beings having a Human experience.
But, as infinite beings, we are really all a part of the One, the all-that-is, the universal consciousness, the Unified Field.
So in my writing, I choose to make a distinction between our Human being, the “meat-suit” and our spiritual being, the essence.
When referring to the Human, I use everybody, anybody, nobody. And when referring to the individual instance of the spiritual One, I use everyone, anyone, no-one.
Of course, in general usage, without having read this explanation, nobody consciously sees that distinction. But words have power when used with intention, and I suspect that everyone has an intuitive grasp of the distinction that I’ve chosen to make visible.
Try it in your writing and speech, it adds a new dimension of subtle communication and, I believe, conscious awareness.
The chances are that everybody will ignore my suggestion; and anyone – maybe everyone – might just choose to be more intentional with their words.