spoil vs go bad

spoil is a noun but go bad is not a noun.

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

As verbs, spoil and go bad are synonyms defined as:

spoil (noun)	go bad (noun)
the act of stripping and taking by force
the act of spoiling something by causing damage to it
(usually plural) valuables taken by violence (especially in war)

spoil (verb)	go bad (verb)
become unfit for consumption or use	become unfit for consumption or use
alter from the original	stop operating or functioning
make imperfect
destroy and strip of its possession
have a strong desire or urge to do something
hinder or prevent (the efforts, plans, or desires) of
treat with excessive indulgence
make a mess of, destroy or ruin