go forth vs fall out

go forth and fall out both are verbs.

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

As verbs, fall out is a hyponym of go forth; that is, fall out is a word with a more specific, narrower meaning than go forth:

Other hyponyms of go forth include pop out, radiate, leak, escape, fall, debouch, come out.

go forth (verb)	fall out (verb)
come out of	come to pass
go away from a place	have a breach in relations
	drop out
	leave (a barracks) in order to take a place in a military formation, or leave a military formation
	come as a logical consequence; follow logically