arrester hook vs arrester

arrester hook and arrester both are nouns.

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

As nouns, arrester hook and arrester are synonyms defined as:

arrester hook and arrester: a restraint that slows airplanes as they land on the flight deck of an aircraft carrier

arrester hook (noun)	arrester (noun)
a restraint that slows airplanes as they land on the flight deck of an aircraft carrier	a restraint that slows airplanes as they land on the flight deck of an aircraft carrier