emersion vs egress

emersion and egress both are nouns.

Word	Noun	Adjective	Verb	Adverb
emersion	Yes	No	No	No
egress	Yes	No	Yes	No

As nouns, emersion and egress are synonyms defined as:

emersion and egress: (astronomy) the reappearance of a celestial body after an eclipse

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

emersion (verb)	egress (verb)
	come out of