ineffable vs sacred

ineffable and sacred both are adjectives.

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

ineffable (adjective)	sacred (adjective)
defying expression or description	concerned with religion or religious purposes
too sacred to be uttered	(often followed by `to') devoted exclusively to a single use or purpose or person
	made or declared or believed to be holy; devoted to a deity or some religious ceremony or use
	worthy of respect or dedication
	worthy of religious veneration