spicery vs piquantness

spicery and piquantness both are nouns.

Word	Noun	Adjective	Verb	Adverb
spicery	Yes	No	No	No
piquantness	Yes	No	No	No

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

Other hyponyms of spicery include bite, pungency, raciness, sharpness, nip, piquance, piquancy, tang, tanginess, zest, hotness, pepperiness.

spicery (noun)	piquantness (noun)
the property of being seasoned with spice and so highly flavored	a tart spicy quality
	the quality of being agreeably stimulating or mentally exciting