emergence vs emission

emergence and emission both are nouns.

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

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

Other hyponyms of emergence include surfacing, emanation.

emergence (noun)	emission (noun)
the act of coming (or going) out; becoming apparent	the act of emitting; causing to flow forth
the act of emerging	the occurrence of a flow of water (as from a pipe)
the becoming visible	the release of electrons from parent atoms
the gradual beginning or coming forth	any of several bodily processes by which substances go out of the body
	a substance that is emitted or released