irritability vs snappishness

irritability and snappishness both are nouns.

Word	Noun	Adjective	Verb	Adverb
irritability	Yes	No	No	No
snappishness	Yes	No	No	No

As nouns, irritability and snappishness are synonyms defined as:

irritability and snappishness: a disposition to exhibit uncontrolled anger

Other synonyms of irritability include biliousness, peevishness, pettishness, surliness, temper.

irritability (noun)	snappishness (noun)
a disposition to exhibit uncontrolled anger	a disposition to exhibit uncontrolled anger
excessive sensitivity of an organ or body part
an irritable petulant feeling