-body vs. -one

[William Salmon]

>>>  Aren't there a lot of speakers and writers who use both forms freely?
>>>  I'm not saying interchangeably, since I'm sure there are subtle
>>>  differences, possibly in register (-one being more more formal?) but
>>>  I'm hard pressed to say what the difference is for me, and I'm sure I
>>>  use both in relatively free distribution.

'Someone' is definitely more formal for this Texan.

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