fretfulness vs petulance

fretfulness and petulance both are nouns.

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

As nouns, fretfulness and petulance are synonyms defined as:

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

fretfulness (noun)	petulance (noun)
an irritable petulant feeling	an irritable petulant feeling