bristliness vs thorniness

bristliness and thorniness both are nouns.

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

As nouns, bristliness and thorniness are synonyms defined as:

bristliness and thorniness: the quality of being covered with prickly thorns or spines

Other synonyms of bristliness include prickliness, spininess.

bristliness (noun)	thorniness (noun)
the quality of being covered with prickly thorns or spines	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.