abrasiveness vs harshness

abrasiveness and harshness both are nouns.

Word	Noun	Adjective	Verb	Adverb
abrasiveness	Yes	No	No	No
harshness	Yes	No	No	No

As nouns, abrasiveness and harshness are synonyms defined as:

abrasiveness and harshness: the roughness of a substance that causes abrasions

Other synonyms of abrasiveness include scratchiness.

abrasiveness (noun)	harshness (noun)
the roughness of a substance that causes abrasions	the quality of being harsh or rough or grating to the senses
the quality of being sharply disagreeable	excessive sternness
	the roughness of a substance that causes abrasions
	the quality of being cruel and causing tension or annoyance