acrimony vs thorniness

acrimony and thorniness both are nouns.

Word	Noun	Adjective	Verb	Adverb
acrimony	Yes	No	No	No
thorniness	Yes	No	No	No

As nouns, acrimony and thorniness are synonyms defined as:

Other synonyms of acrimony include acerbity, bitterness, jaundice, tartness.

acrimony (noun)	thorniness (noun)
a rough and bitter manner	the quality of being covered with prickly thorns or spines
	a rough and bitter manner
	The property of being full of difficulties, complexities, or controversial points.