waver vs oscillate

waver is a noun but oscillate is not a noun.

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

As verbs, oscillate is a hyponym of waver; that is, oscillate is a word with a more specific, narrower meaning than waver:

waver: pause or hold back in uncertainty or unwillingness
oscillate: be undecided about something; waver between conflicting positions or courses of action

Other hyponyms of waver include dwell on, linger over, boggle, hover, linger, hover, vacillate, vibrate, falter, waver.

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

waver (verb)	oscillate (verb)
give off unsteady sounds, alternating in amplitude or frequency	move or swing from side to side regularly
sway from side to side	be undecided about something; waver between conflicting positions or courses of action
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