fretfulness vs peevishness

fretfulness and peevishness both are nouns.

Word	Noun	Adjective	Verb	Adverb
fretfulness	Yes	No	No	No
peevishness	Yes	No	No	No

As nouns, fretfulness and peevishness are synonyms defined as:

Other synonyms of fretfulness include choler, crossness, fussiness, irritability, petulance.

fretfulness (noun)	peevishness (noun)
an irritable petulant feeling	a disposition to exhibit uncontrolled anger
	an irritable petulant feeling