specialness vs particularity

specialness and particularity both are nouns.

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

As nouns, specialness and particularity are synonyms defined as:

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

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