imminence vs imminency

imminence and imminency both are nouns.

Word	Noun	Adjective	Verb	Adverb
imminence	Yes	No	No	No
imminency	Yes	No	No	No

As nouns, imminence and imminency are synonyms defined as:

imminence and imminency: the state of being imminent and liable to happen soon

Other synonyms of imminence include forthcomingness, imminentness, impendence, impendency.

imminence (noun)	imminency (noun)
the state of being imminent and liable to happen soon	the state of being imminent and liable to happen soon