beats per minute vs M.M.

beats per minute and M.M. both are nouns.

Word	Noun	Adjective	Verb	Adverb
beats per minute	Yes	No	No	No
M.M.	Yes	No	No	No

As nouns, beats per minute and M.M. are synonyms defined as:

beats per minute and M.M.: the pace of music measured by the number of beats occurring in 60 seconds

Other synonyms of beats per minute include bpm, metronome marking.

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