go forth vs go away

go forth and go away both are verbs.

Word	Noun	Adjective	Verb	Adverb
go forth	No	No	Yes	No
go away	No	No	Yes	No

As verbs, go forth and go away are synonyms defined as:

Other synonyms of go forth include leave.

go forth (verb)	go away (verb)
come out of	get lost, as without warning or explanation
go away from a place	go away from a place
	move away from a place into another direction
	become invisible or unnoticeable