waver vs doubt

waver and doubt both are nouns.

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

waver (noun)	doubt (noun)
the act of moving back and forth	uncertainty about the truth or factuality or existence of something
the act of pausing uncertainly	the state of being unsure of something
someone who communicates by waving

waver (verb)	doubt (verb)
give off unsteady sounds, alternating in amplitude or frequency	consider unlikely
sway from side to side	lack confidence in
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