particularity vs specialness

particularity and specialness both are nouns.

Word	Noun	Adjective	Verb	Adverb
particularity	Yes	No	No	No
specialness	Yes	No	No	No

As nouns, particularity and specialness are synonyms defined as:

particularity and specialness: the quality of being particular and pertaining to a specific case or instance

particularity (noun)	specialness (noun)
the quality of being particular and pertaining to a specific case or instance	a distinguishing trait
	the quality of being particular and pertaining to a specific case or instance