anti-sway bar vs stabiliser

anti-sway bar and stabiliser both are nouns.

Word	Noun	Adjective	Verb	Adverb
anti-sway bar	Yes	No	No	No
stabiliser	Yes	No	No	No

As nouns, stabiliser is a hypernym of anti-sway bar; that is, stabiliser is a word with a broader meaning than anti-sway bar:

anti-sway bar: a rigid metal bar between the front suspensions and between the rear suspensions of cars and trucks; serves to stabilize the chassis
stabiliser: a device for making something stable

Other hypernyms of anti-sway bar include bar, stabilizer.

anti-sway bar (noun)	stabiliser (noun)
a rigid metal bar between the front suspensions and between the rear suspensions of cars and trucks; serves to stabilize the chassis	a device for making something stable