approach vs go on

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

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

approach (noun)	go on (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

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