inviolable vs sacred

inviolable and sacred both are adjectives.

Word	Noun	Adjective	Verb	Adverb
inviolable	No	Yes	No	No
sacred	No	Yes	No	No

inviolable (adjective)	sacred (adjective)
incapable of being transgressed or dishonored	concerned with religion or religious purposes
not capable of being violated or infringed	(often followed by `to') devoted exclusively to a single use or purpose or person
immune to attack; incapable of being tampered with	made or declared or believed to be holy; devoted to a deity or some religious ceremony or use
must be kept sacred	worthy of respect or dedication
	worthy of religious veneration