harmless vs innocuous

harmless and innocuous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
harmless	No	Yes	No	No
innocuous	No	Yes	No	No

harmless (adjective)	innocuous (adjective)
not causing or capable of causing harm	not injurious to physical or mental health
	lacking intent or capacity to injure
	not causing disapproval