timing vs coming

timing and coming both are nouns.

Word	Noun	Adjective	Verb	Adverb
timing	Yes	No	No	No
coming	Yes	Yes	No	No

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

timing (noun)	coming (noun)
the regulation of occurrence, pace, or coordination to achieve a desired effect (as in music, theater, athletics, mechanics)	the moment of most intense pleasure in sexual intercourse
the time when something happens	arrival that has been awaited (especially of something momentous)
	the act of drawing spatially closer to something
	the temporal property of becoming nearer in time

timing (adjective)	coming (adjective)
	of the relatively near future