emergence vs egression

emergence and egression both are nouns.

Word	Noun	Adjective	Verb	Adverb
emergence	Yes	No	No	No
egression	Yes	No	No	No

As nouns, emergence and egression are synonyms defined as:

emergence and egression: the act of coming (or going) out; becoming apparent

Other synonyms of emergence include egress.

emergence (noun)	egression (noun)
the act of coming (or going) out; becoming apparent	the act of coming (or going) out; becoming apparent
the act of emerging
the becoming visible
the gradual beginning or coming forth