quivering vs trembling

quivering and trembling both are nouns.

Word	Noun	Adjective	Verb	Adverb
quivering	Yes	No	No	No
trembling	Yes	Yes	No	No

As nouns, quivering and trembling are synonyms defined as:

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

quivering (noun)	trembling (noun)
the act of vibrating	a shaky motion
a shaky motion

quivering (adjective)	trembling (adjective)
	vibrating slightly and irregularly; as e.g. with fear or cold or like the leaves of an aspen in a breeze