> Motors primarily convert electrical energy (or fluid/air pressure in the case of hydraulic/pneumatic motors) into mechanical motion. Just like you call it a

> Motors primarily convert electrical energy (or fluid/air pressure in the case of hydraulic/pneumatic motors) into mechanical motion. Just like you call it a "hydraulic motor" in the parenthesis, the former is an "electric motor" (or rather, "inductance motor", "reluctance motor", etc.). The term "motor" is used for any conversion into mechanical power. Molecular motors and motor proteins are such examples of entirely chemical motors, albeit at quite small scales. (The distinction also appears unique to English, as Germanic languages generally just have "motor".)