Suggestion: Rotate around Actor/Point

Shouldn't these pre-shipped behaviors be called, revolve around actor, instead of rotate around ?

Maybe it's because English is not my native language, but what's the difference between revolve and rotate?

The Earth rotates on it's axis once every 24 hours and it revolves around the sun every 365.24 days

Okay, I see. Makes sense, I can renamed them.

Edit:
I was curious, because I had never heard of the distinction before in maths (and mathematicians are usually quite pedantic about the correct use of terms.) It seems only in astronomy it is common to make a difference between rotate and revolve:
http://en.wikipedia.org/wiki/Rotation

I have a question along this topic:

Does anyone know how to create a behavior that will rotate an actor on its axis if you touch and drag (iOS)?

I have attached an image to help clarify what I'd like to do.

If anyone can point me in the right direction with this I would be most appreciative! (either coding a behavior or if I am just missing something in the preloaded behaviors)

Thanks in advance for taking your time to look at this!