metronome marking vs beats per minute

metronome marking and beats per minute both are nouns.

Word	Noun	Adjective	Verb	Adverb
metronome marking	Yes	No	No	No
beats per minute	Yes	No	No	No

As nouns, metronome marking and beats per minute are synonyms defined as:

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

Other synonyms of metronome marking include bpm, M.M..

metronome marking (noun)	beats per minute (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