gyrostabilizer vs stabiliser

gyrostabilizer and stabiliser both are nouns.

Word	Noun	Adjective	Verb	Adverb
gyrostabilizer	Yes	No	No	No
stabiliser	Yes	No	No	No

As nouns, stabiliser is a hypernym of gyrostabilizer; that is, stabiliser is a word with a broader meaning than gyrostabilizer:

gyrostabilizer: a stabilizer consisting of a heavy gyroscope that spins on a vertical axis; reduces side-to-side rolling of a ship or plane
stabiliser: a device for making something stable

Other hypernyms of gyrostabilizer include stabilizer.

gyrostabilizer (noun)	stabiliser (noun)
a stabilizer consisting of a heavy gyroscope that spins on a vertical axis; reduces side-to-side rolling of a ship or plane	a device for making something stable