negligence vs laxness

negligence and laxness both are nouns.

Word	Noun	Adjective	Verb	Adverb
negligence	Yes	No	No	No
laxness	Yes	No	No	No

As nouns, laxness is a hyponym of negligence; that is, laxness is a word with a more specific, narrower meaning than negligence:

Other hyponyms of negligence include delinquency, dereliction, willful neglect, laxity, remissness, slackness.

negligence (noun)	laxness (noun)
failure to act with the prudence that a reasonable person would exercise under the same circumstances	the quality of being lax and neglectful
the trait of neglecting responsibilities and lacking concern	the condition of being physiologically lax