bob under vs go away

bob under and go away both are verbs.

Word	Noun	Adjective	Verb	Adverb
bob under	No	No	Yes	No
go away	No	No	Yes	No

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

Other hypernyms of bob under include disappear, vanish.

bob under (verb)	go away (verb)
disappear suddenly, as if under the surface of a body of water	get lost, as without warning or explanation
	go away from a place
	move away from a place into another direction
	become invisible or unnoticeable