quavering vs unsteady

quavering and unsteady both are adjectives.

Word	Noun	Adjective	Verb	Adverb
quavering	No	Yes	No	No
unsteady	No	Yes	No	No

quavering (adjective)	unsteady (adjective)
(of the voice) quivering as from weakness or fear	subject to change or variation
	not firmly or solidly positioned