go on vs fall out

go on and fall out both are verbs.

Word	Noun	Adjective	Verb	Adverb
go on	No	No	Yes	No
fall out	No	No	Yes	No

As verbs, go on and fall out are synonyms defined as:

Other synonyms of go on include come about, hap, happen, occur, pass, pass off, take place.

go on (verb)	fall out (verb)
come to pass	come to pass
continue talking	have a breach in relations
start running, functioning, or operating	drop out
move forward, also in the metaphorical sense	leave (a barracks) in order to take a place in a military formation, or leave a military formation
continue a certain state, condition, or activity	come as a logical consequence; follow logically