If we're being hyper-specific with terminology, it's 1 Movement + 1 Attack (not "Action"), which might help clarify the matter.
Non-attack actions are usually handwaved as part of the narration unless it "intentionally and directly damages another living being" (p. 40) at which point it qualifies as an attack. I'm not sure why they bothered with the "living being" clause since you can certainly attack many things which aren't living, like vehicles, drones, doors, etc.
Attacks are detailed on p. 40. Movement is detailed on p. 42.
Amps adjust the number of attacks you have per Scene, and/or the number of Plot Points. Plot points can be turned into extra movement with Double Time (p. 36 and again on p. 42).