emission vs emanation

emission and emanation both are nouns.

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

As nouns, emission and emanation are synonyms defined as:

emission (noun)	emanation (noun)
the act of emitting; causing to flow forth	the act of emitting; causing to flow forth
the occurrence of a flow of water (as from a pipe)	(theology) the origination of the Holy Spirit at Pentecost
the release of electrons from parent atoms	something that is emitted or radiated (as a gas or an odor or a light, etc.)
any of several bodily processes by which substances go out of the body
a substance that is emitted or released