go on vs approach

go on is not a noun while approach is a noun.

Word	Noun	Adjective	Verb	Adverb
go on	No	No	Yes	No
approach	Yes	No	Yes	No

go on (noun)	approach (noun)
	the act of drawing spatially closer to something
	a relatively short golf shot intended to put the ball onto the putting green
	ideas or actions intended to deal with a problem or situation
	a way of entering or leaving
	the temporal property of becoming nearer in time
	a close approximation
	a tentative suggestion designed to elicit the reactions of others
	the event of one object coming closer to another
	the final path followed by an aircraft as it is landing

go on (verb)	approach (verb)
come to pass	make advances to someone, usually with a proposal or suggestion
continue talking	move towards
start running, functioning, or operating	come near in time
move forward, also in the metaphorical sense	begin to deal with
continue a certain state, condition, or activity	come near or verge on, resemble, come nearer in quality, or character