spice vs piquancy

spice and piquancy both are nouns.

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

As nouns, piquancy is a hyponym of spice; that is, piquancy is a word with a more specific, narrower meaning than spice:

spice (noun)	piquancy (noun)
the property of being seasoned with spice and so highly flavored	a tart spicy quality
any of a variety of pungent aromatic vegetable substances used for flavoring food	the quality of being agreeably stimulating or mentally exciting
aromatic substances of vegetable origin used as a preservative

spice (verb)	piquancy (verb)
make more interesting or flavorful
add herbs or spices to