Sure , an AC outlet (grounded) has three contacts (everywhere) live/neutral/ground.
Since the 70's (at least in Italy) grounding is compulsory on ALL sockets.
The plugs may have two (ungrounded) or three (grounded) pins, and the plug is compatible to both.
Of course only Class 2 (double insulation) devices can have a two pin plug, as well as lighting appliances.
But often an issue may be not the grounding (in the sense of a third cable, yellow/green along the standard, connected to the plug and the use of a three contact plug) but the grounding in the sense of how well the grounding wires are connected to actual ground, it's not rare the case of a bad ground or of oxidized contacts/loose bolts/etc. making the ground partially or totally ineffective.
About AC, not only there is the 120 vs 240 V difference, but in the US electricity is @60 Hz while in EU it is @50Hz, which is a further issue for anything containing an electric motor, i.e. even if you use a transformer to make the voltage correct, an EU motor will run roughly 20% faster in the US and viceversa a US motor will ruin roughly 20% slower in EU.