hardship vs asperity

hardship and asperity both are nouns.

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

As nouns, hardship and asperity are synonyms defined as:

Other synonyms of hardship include grimness, rigor, rigorousness, rigour, rigourousness, severeness, severity.

hardship (noun)	asperity (noun)
something hard to endure	something hard to endure
something that causes or entails suffering	harshness of manner
a state of misfortune or affliction