Diff between Dual Action and Orbital

Weve frequently seen the Porter Cable called both a Dual Action polisher, and an Oribital polisher...Is there any difference? If so, what is it?
 
No difference really.



I often hear people refer to the PC, DeWalt, Cyclo and other buffers that can be used to polish as Dual-Action and refer to the big random orbital buffers that use bonnets to buff wax as orbital buffers.



Both terms are correct. I like Dual-Action myself.
 
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