starter vs electric motor

starter and electric motor both are nouns.

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

As nouns, electric motor is a hypernym of starter; that is, electric motor is a word with a broader meaning than starter:

starter (noun)	electric motor (noun)
a culture containing yeast or bacteria that is used to start the process of fermentation or souring in making butter or cheese or dough	a motor that converts electricity to mechanical work
a hand tool consisting of a rotating shaft with parallel handle
an electric motor for starting an engine
food or drink to stimulate the appetite (usually served before a meal or as the first course)
any new participant in some activity
the official who signals the beginning of a race or competition
a contestant in a team sport who is in the game at the beginning