innocuous vs unobjectionable

innocuous and unobjectionable both are adjectives.

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

As adjectives, innocuous and unobjectionable are synonyms defined as:

innocuous (adjective)	unobjectionable (adjective)
not injurious to physical or mental health	(of behavior or especially language) free from objectionable elements; fit for all observers
lacking intent or capacity to injure	not objectionable
not causing disapproval	not causing disapproval