distinctiveness vs specialness

distinctiveness and specialness both are nouns.

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

As nouns, distinctiveness and specialness are synonyms defined as:

Other synonyms of distinctiveness include peculiarity, speciality, specialty.

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