unobjectionable vs innocuous

unobjectionable and innocuous both are adjectives.

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

As adjectives, unobjectionable and innocuous are synonyms defined as:

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