consternation vs fearfulness

consternation and fearfulness both are nouns.

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

As nouns, fearfulness is a hypernym of consternation; that is, fearfulness is a word with a broader meaning than consternation:

consternation: fear resulting from the awareness of danger
fearfulness: an emotion experienced in anticipation of some specific pain or danger (usually accompanied by a desire to flee or fight)

Other hypernyms of consternation include fear, fright.

consternation (noun)	fearfulness (noun)
fear resulting from the awareness of danger	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)