palpitation vs shakiness

palpitation and shakiness both are nouns.

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

As nouns, palpitation and shakiness are synonyms defined as:

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

palpitation (noun)	shakiness (noun)
a rapid and irregular heart beat	the quality of being unstable and insecure
a shaky motion	a shaky motion