forthcomingness vs impendency

forthcomingness and impendency both are nouns.

Word	Noun	Adjective	Verb	Adverb
forthcomingness	Yes	No	No	No
impendency	Yes	No	No	No

As nouns, forthcomingness and impendency are synonyms defined as:

forthcomingness and impendency: the state of being imminent and liable to happen soon

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

forthcomingness (noun)	impendency (noun)
the state of being imminent and liable to happen soon	the state of being imminent and liable to happen soon