bit rate vs pace

bit rate and pace both are nouns.

Word	Noun	Adjective	Verb	Adverb
bit rate	Yes	No	No	No
pace	Yes	No	Yes	No

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

bit rate: the number of bits that are conveyed or processed per unit of time.
pace: the relative speed of progress or change

Other hypernyms of bit rate include rate.

bit rate (noun)	pace (noun)
the number of bits that are conveyed or processed per unit of time.	a step in walking or running
	the relative speed of progress or change
	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