gizmo vs gimbal

gizmo and gimbal both are nouns.

Word	Noun	Adjective	Verb	Adverb
gizmo	Yes	No	No	No
gimbal	Yes	No	No	No

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

gizmo: a device or control that is very useful for a particular job
gimbal: an appliance that allows an object (such as a ship's compass) to remain horizontal even as its support tips

Other hyponyms of gizmo include gadgetry, injector, mod con.

gizmo (noun)	gimbal (noun)
a device or control that is very useful for a particular job	an appliance that allows an object (such as a ship's compass) to remain horizontal even as its support tips
something unspecified whose name is either forgotten or not known