go down vs go bad

go down and go bad both are verbs.

Word	Noun	Adjective	Verb	Adverb
go down	No	No	Yes	No
go bad	No	No	Yes	No

As verbs, go bad is a hypernym of go down; that is, go bad is a word with a broader meaning than go down:

Other hypernyms of go down include break, break down, conk out, die, fail, give out, give way, go.

go down (verb)	go bad (verb)
grow smaller	become unfit for consumption or use
stop operating	stop operating or functioning
be defeated
be ingested
go under
disappear beyond the horizon
move downward and lower, but not necessarily all the way
be recorded or remembered