come forth vs egress

come forth is not a noun while egress is a noun.

Word	Noun	Adjective	Verb	Adverb
come forth	No	No	Yes	No
egress	Yes	No	Yes	No

As verbs, come forth and egress are synonyms defined as:

Other synonyms of come forth include come out, emerge, go forth, issue.

come forth (noun)	egress (noun)
	the act of coming (or going) out; becoming apparent
	(astronomy) the reappearance of a celestial body after an eclipse
	the becoming visible

come forth (verb)	egress (verb)
come out of	come out of
happen or occur as a result of something