emission vs flowing

emission and flowing both are nouns.

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

As nouns, flowing is a hypernym of emission; that is, flowing is a word with a broader meaning than emission:

Other hypernyms of emission include flow.

emission (noun)	flowing (noun)
the act of emitting; causing to flow forth	the motion characteristic of fluids (liquids or gases)
the occurrence of a flow of water (as from a pipe)
the release of electrons from parent atoms
any of several bodily processes by which substances go out of the body
a substance that is emitted or released

emission (adjective)	flowing (adjective)
	designed or arranged to offer the least resistance to fluid flow