sharpness vs asperity

sharpness and asperity both are nouns.

Word	Noun	Adjective	Verb	Adverb
sharpness	Yes	No	No	No
asperity	Yes	No	No	No

As nouns, sharpness and asperity are synonyms defined as:

sharpness (noun)	asperity (noun)
harshness of manner	something hard to endure
thinness of edge or fineness of point	harshness of manner
a strong odor or taste property
the quality of being sharp and clear
the attribute of urgency in tone of voice
the quality of being keenly and painfully felt
a quick and penetrating intelligence