The tag alias #52281 arcade_cabinet -> arcade_machine has been approved.

Reason: same thing

EDIT: The tag alias arcade_cabinet -> arcade_machine (forum #312355) has been approved by @Rainbow_Dash.

Technically they're not, as an arcade cabinet is the enclosure, while an arcade machine includes the cabinet, a monitor/screen, and other peripherals necessary to play. You can have a cabinet without the rest of the machine. But the distinction is not likely relevant to keep for tagging purposes.