evil vs grievous

evil is a noun but grievous is not a noun.

Word	Noun	Adjective	Verb	Adverb
evil	Yes	Yes	No	No
grievous	No	Yes	No	No

evil (noun)	grievous (noun)
morally objectionable behavior
the quality of being morally wrong in principle or practice

evil (adjective)	grievous (adjective)
morally bad or wrong	causing fear or anxiety by threatening great harm
having or exerting a malignant influence	shockingly brutal or cruel
having the nature of vice	of great gravity or crucial import; requiring serious thought
	causing or marked by grief or anguish