Difference between virtual displacement and differential?

[Teeeeemo]

What exactly is the difference between a virtual displacement and a differential displacement? It seems like they are really the same thing if by differential we assume we are talking about a distance whose magnitude approaches zero.

 

[kuruman]

There is a difference in context. A virtual displacement is sort of a differential displacement but not the other way around.
https://en.wikipedia.org/wiki/Virtual_displacement