trembling vs vibration

trembling and vibration both are nouns.

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

As nouns, trembling and vibration are synonyms defined as:

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

trembling (noun)	vibration (noun)
a shaky motion	the act of vibrating
	a distinctive emotional aura experienced instinctively
	(physics) a regular periodic variation in value about a mean
	a shaky motion

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