egress vs surfacing

egress and surfacing both are nouns.

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

As nouns, surfacing is a hyponym of egress; that is, surfacing is a word with a more specific, narrower meaning than egress:

Other hyponyms of egress include emanation, emission.

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

egress (verb)	surfacing (verb)
come out of