piquancy vs piquance

piquancy and piquance both are nouns.

Word	Noun	Adjective	Verb	Adverb
piquancy	Yes	No	No	No
piquance	Yes	No	No	No

As nouns, piquancy and piquance are synonyms defined as:

Other synonyms of piquancy include nip, piquantness, tang, tanginess, zest.

As nouns, piquancy and piquance are synonyms defined as:

piquancy and piquance: the quality of being agreeably stimulating or mentally exciting

Other synonyms of piquancy include piquantness.

piquancy (noun)	piquance (noun)
a tart spicy quality	a tart spicy quality
the quality of being agreeably stimulating or mentally exciting	the quality of being agreeably stimulating or mentally exciting