nonfeasance vs dereliction

nonfeasance and dereliction both are nouns.

Word	Noun	Adjective	Verb	Adverb
nonfeasance	Yes	No	No	No
dereliction	Yes	No	No	No

As nouns, dereliction is a hypernym of nonfeasance; that is, dereliction is a word with a broader meaning than nonfeasance:

nonfeasance: a failure to act when under an obligation to do so; a refusal (without sufficient excuse) to do that which it is your legal duty to do
dereliction: willful negligence

nonfeasance (noun)	dereliction (noun)
a failure to act when under an obligation to do so; a refusal (without sufficient excuse) to do that which it is your legal duty to do	willful negligence
	a tendency to be negligent and uncaring