jubilancy vs jubilation

jubilancy and jubilation both are nouns.

Word	Noun	Adjective	Verb	Adverb
jubilancy	Yes	No	No	No
jubilation	Yes	No	No	No

As nouns, jubilancy and jubilation are synonyms defined as:

Other synonyms of jubilancy include exultation, jubilance.

jubilancy (noun)	jubilation (noun)
a feeling of extreme joy	the utterance of sounds expressing great joy
	a joyful occasion for special festivities to mark some happy event
	a feeling of extreme joy