There is nothing like ActionFlash. The only two things exists:
Program for creating flash animations.
More info on Macromedia
Macromedia Flash MX 2004 - product info
Actionscript (sometimes as two words Action script) is programing language for operations inside the flash. Actionscript is simmilar to Javascript or EcmaScript. It is possible to move objecst, timeout scenes, read XML files and many more.
Actionscript.org Macromedia Flash Resources and Tutorials