palpitation vs shaking

palpitation and shaking both are nouns.

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

As nouns, palpitation and shaking are synonyms defined as:

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

palpitation (noun)	shaking (noun)
a rapid and irregular heart beat	the act of causing something to move up and down (or back and forth) with quick movements
a shaky motion	a shaky motion