1.
Food that is ~ has a pleasantly spicy taste. (WRITTEN)
...a crisp mixed salad with an unusually ~ dressing.
ADJ
piquancy
A little mustard is served on the side to add further piquancy.
N-UNCOUNT
2.
Something that is ~ is interesting and exciting. (WRITTEN)
There may well have been a ~ novelty about her books when they came out.
ADJ
piquancy
Piquancy was added to the situation because Dr Porter was then on the point of marrying Hugh Miller.
N-UNCOUNT