quickness vs pace

quickness and pace both are nouns.

Word	Noun	Adjective	Verb	Adverb
quickness	Yes	No	No	No
pace	Yes	No	Yes	No

As nouns, pace is a hypernym of quickness; that is, pace is a word with a broader meaning than quickness:

Other hypernyms of quickness include rate.

quickness (noun)	pace (noun)
a rate that is rapid	a step in walking or running
intelligence as revealed by an ability to give correct responses without delay	the relative speed of progress or change
skillful performance or ability without difficulty	a unit of length equal to 3 feet; defined as 91.44 centimeters; originally taken to be the average length of a stride
	the distance covered by a step
	the rate of moving (especially walking or running)
	the rate of some repeating event