motor vs electric motor

motor and electric motor both are nouns.

Word	Noun	Adjective	Verb	Adverb
motor	Yes	Yes	Yes	No
electric motor	Yes	No	No	No

As nouns, electric motor is a hyponym of motor; that is, electric motor is a word with a more specific, narrower meaning than motor:

motor: machine that converts other forms of energy into mechanical energy and so imparts motion
electric motor: a motor that converts electricity to mechanical work

Other hyponyms of motor include engine, stepper, stepping motor, hydraulic motor, gearmotor.

motor (noun)	electric motor (noun)
machine that converts other forms of energy into mechanical energy and so imparts motion	a motor that converts electricity to mechanical work
a nonspecific agent that imparts motion

motor (adjective)	electric motor (adjective)
causing or able to cause motion
conveying information to the muscles from the CNS

motor (verb)	electric motor (verb)
travel or be transported in a vehicle