bob under vs vanish

bob under and vanish both are verbs.

Word	Noun	Adjective	Verb	Adverb
bob under	No	No	Yes	No
vanish	No	No	Yes	No

As verbs, vanish is a hypernym of bob under; that is, vanish is a word with a broader meaning than bob under:

Other hypernyms of bob under include disappear, go away.

bob under (verb)	vanish (verb)
disappear suddenly, as if under the surface of a body of water	get lost, as without warning or explanation
	decrease rapidly and disappear
	cease to exist
	pass away rapidly
	become invisible or unnoticeable