restraint vs arrester

restraint and arrester both are nouns.

Word	Noun	Adjective	Verb	Adverb
restraint	Yes	No	No	No
arrester	Yes	No	No	No

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

restraint: a device that retards something's motion
arrester: a restraint that slows airplanes as they land on the flight deck of an aircraft carrier

restraint (noun)	arrester (noun)
the act of controlling by restraining someone or something	a restraint that slows airplanes as they land on the flight deck of an aircraft carrier
a device that retards something's motion
discipline in personal and social activities
lack of ornamentation
a rule or condition that limits freedom
the state of being physically constrained