insistence vs insistency

insistence and insistency both are nouns.

Word	Noun	Adjective	Verb	Adverb
insistence	Yes	No	No	No
insistency	Yes	No	No	No

As nouns, insistence and insistency are synonyms defined as:

As nouns, insistence and insistency are synonyms defined as:

Other synonyms of insistence include imperativeness, press, pressure.

insistence (noun)	insistency (noun)
the act of insisting on something	the act of insisting on something
continual and persistent demands	the state of demanding notice or attention
the state of demanding notice or attention