irresponsibility vs responsibility

irresponsibility and responsibility both are nouns.

Word	Noun	Adjective	Verb	Adverb
irresponsibility	Yes	No	No	No
responsibility	Yes	No	No	No

irresponsibility (noun)	responsibility (noun)
a form of untrustworthiness; the trait of lacking a sense of responsibility and not feeling accountable for your actions	the social force that binds you to the courses of action demanded by that force
	a form of trustworthiness; the trait of being answerable to someone for something or being responsible for one's conduct
	the proper sphere or extent of your activities