self-starter vs electric motor

self-starter and electric motor both are nouns.

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

self-starter (noun)	electric motor (noun)
an electric starting motor that automatically starts an internal-combustion engine	a motor that converts electricity to mechanical work
an energetic person with unusual initiative