pace vs M.M.

pace and M.M. both are nouns.

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

As nouns, M.M. is a hyponym of pace; that is, M.M. is a word with a more specific, narrower meaning than pace:

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

Other hyponyms of pace include beats per minute, bpm, metronome marking.

pace (noun)	M.M. (noun)
a step in walking or running	the pace of music measured by the number of beats occurring in 60 seconds
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