As nouns the difference between piquancy and piquance
is that piquancy is the degree to which something is piquant, stimulating or exciting while piquance is piquancy; having a piquant taste.
piquancy
English
Noun
(-)
The degree to which something is piquant, stimulating or exciting.
piquance
English
Noun
(head)
piquancy; having a piquant taste.