promptness vs timing

promptness and timing both are nouns.

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

As nouns, timing is a hypernym of promptness; that is, timing is a word with a broader meaning than promptness:

promptness (noun)	timing (noun)
the characteristic of doing things without delay	the regulation of occurrence, pace, or coordination to achieve a desired effect (as in music, theater, athletics, mechanics)
the quality or habit of adhering to an appointed time	the time when something happens