contumely vs vitriol

contumely and vitriol both are nouns.

Word	Noun	Adjective	Verb	Adverb
contumely	Yes	No	No	No
vitriol	Yes	No	Yes	No

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

contumely: a rude expression intended to offend or hurt
vitriol: abusive or venomous language used to express blame or censure or bitter deep-seated ill will

Other hyponyms of contumely include low blow, billingsgate, scurrility, cut, stinger, invective, vituperation.

contumely (noun)	vitriol (noun)
a rude expression intended to offend or hurt	abusive or venomous language used to express blame or censure or bitter deep-seated ill will
	(H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry

contumely (verb)	vitriol (verb)
	subject to bitter verbal abuse
	expose to the effects of vitriol or injure with vitriol