fright vs fearfulness

fright and fearfulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
fright	Yes	No	Yes	No
fearfulness	Yes	No	No	No

As nouns, fright and fearfulness are synonyms defined as:

fright and fearfulness: an emotion experienced in anticipation of some specific pain or danger (usually accompanied by a desire to flee or fight)

Other synonyms of fright include fear.

fright (noun)	fearfulness (noun)
an emotion experienced in anticipation of some specific pain or danger (usually accompanied by a desire to flee or fight)	the trait of being afraid
	an emotion experienced in anticipation of some specific pain or danger (usually accompanied by a desire to flee or fight)

fright (verb)	fearfulness (verb)
cause fear in