rhythmicity vs cadence

rhythmicity and cadence both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhythmicity	Yes	No	No	No
cadence	Yes	No	No	No

As nouns, cadence is a hyponym of rhythmicity; that is, cadence is a word with a more specific, narrower meaning than rhythmicity:

rhythmicity: the rhythmic property imparted by the accents and relative durations of notes in a piece of music
cadence: a recurrent rhythmical series

Other hyponyms of rhythmicity include meter, metre, time, cadency, lilt, swing.

rhythmicity (noun)	cadence (noun)
the rhythmic property imparted by the accents and relative durations of notes in a piece of music	a recurrent rhythmical series
	the close of a musical section
	(prosody) the accent in a metrical foot of verse