restlessness vs fidget

restlessness and fidget both are nouns.

Word	Noun	Adjective	Verb	Adverb
restlessness	Yes	No	No	No
fidget	Yes	No	Yes	No

As nouns, restlessness and fidget are synonyms defined as:

restlessness and fidget: a feeling of agitation expressed in continual motion

Other synonyms of restlessness include fidgetiness.

restlessness (noun)	fidget (noun)
inability to rest or relax or be still	a feeling of agitation expressed in continual motion
the quality of being ceaselessly moving or active
a feeling of agitation expressed in continual motion
a lack of patience; irritation with anything that causes delay

restlessness (verb)	fidget (verb)
	move restlessly