M.M. vs pace

M.M. and pace both are nouns.

Word	Noun	Adjective	Verb	Adverb
M.M.	Yes	No	No	No
pace	Yes	No	Yes	No

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

M.M.: the pace of music measured by the number of beats occurring in 60 seconds
pace: the rate of some repeating event

Other hypernyms of M.M. include tempo.

M.M. (noun)	pace (noun)
the pace of music measured by the number of beats occurring in 60 seconds	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