waver vs flitter

waver is a noun but flitter is not a noun.

Word	Noun	Adjective	Verb	Adverb
waver	Yes	No	Yes	No
flitter	No	No	Yes	No

As verbs, waver and flitter are synonyms defined as:

Other synonyms of waver include flicker, flutter, quiver.

waver (noun)	flitter (noun)
the act of moving back and forth
the act of pausing uncertainly
someone who communicates by waving

waver (verb)	flitter (verb)
give off unsteady sounds, alternating in amplitude or frequency	move back and forth very rapidly
sway from side to side
move or sway in a rising and falling or wavelike pattern
move back and forth very rapidly
move hesitatingly, as if about to give way
pause or hold back in uncertainty or unwillingness
be unsure or weak