specialty vs specialness

specialty and specialness both are nouns.

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

As nouns, specialty and specialness are synonyms defined as:

Other synonyms of specialty include distinctiveness, peculiarity, speciality.

specialty (noun)	specialness (noun)
the special line of work you have adopted as your career	a distinguishing trait
a distinguishing trait	the quality of being particular and pertaining to a specific case or instance
an asset of special worth or utility