"Set at" vs. 'set upon"

[SkiIucK]

Hello,

What is the difference between both?

Thank you.

[Mister Micawber]

Sorry-- I don't know what meanings you are associating with these. Could you supply examples?
_________________
Native English teacher at Mister Micawber's

[SkiIucK]

Yes, my bad. Sorry.

"To attack or assail: The dogs set at the fox."

"To attack violently: Guards set dogs upon the escaping prisoners."

Reference to www.thefreedictionary.com/set+upon

[Mister Micawber]

Ah. I see no difference in meaning at all-- though I must admit that the first is unfamiliar. Perhaps it is regional in use. I always use the second.
_________________
Native English teacher at Mister Micawber's

[SkiIucK]

I am thankful.