quiver vs shakiness

quiver and shakiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
quiver	Yes	No	Yes	No
shakiness	Yes	No	No	No

As nouns, quiver and shakiness are synonyms defined as:

Other synonyms of quiver include palpitation, quivering, shaking, trembling, vibration.

quiver (noun)	shakiness (noun)
the act of vibrating	the quality of being unstable and insecure
case for holding arrows	a shaky motion
an almost pleasurable sensation of fright
a shaky motion

quiver (verb)	shakiness (verb)
shake with fast, tremulous movements
move with or as if with a regular alternating motion
move back and forth very rapidly