stabiliser vs outrigger

stabiliser and outrigger both are nouns.

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

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

stabiliser: a device for making something stable
outrigger: a stabilizer for a canoe; spars attach to a shaped log or float parallel to the hull

Other hyponyms of stabiliser include fin, gyrostabiliser, gyrostabilizer, anti-sway bar, stabilizer bar.

stabiliser (noun)	outrigger (noun)
a device for making something stable	a stabilizer for a canoe; spars attach to a shaped log or float parallel to the hull