I stand corrected - the technical definition of "power" is "ability granted by class". Nonetheless, there are things that look, sound, and act like powers (dragonsborn breath, cleric channel Divinity, etc) that I may refer to (sloppily) as powers.
Yeah - but there is at least one example of a class feature that says "it works like a power" - the clerics Divine whatchamacallit. As I said, though, I'd refer to them all as "powers", even if they might not necessarily be defined as such.
