remissness vs laxness

remissness and laxness both are nouns.

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

As nouns, remissness and laxness are synonyms defined as:

Other synonyms of remissness include laxity, slackness.

remissness (noun)	laxness (noun)
the quality of being lax and neglectful	the quality of being lax and neglectful
	the condition of being physiologically lax