cadency vs cadence

cadency and cadence both are nouns.

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

As nouns, cadency and cadence are synonyms defined as:

cadency (noun)	cadence (noun)
a recurrent rhythmical series	a recurrent rhythmical series
	the close of a musical section
	(prosody) the accent in a metrical foot of verse