timing vs nowness

timing and nowness both are nouns.

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

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

timing (noun)	nowness (noun)
the regulation of occurrence, pace, or coordination to achieve a desired effect (as in music, theater, athletics, mechanics)	the quality of being the present
the time when something happens