sacrilege vs irreverence

sacrilege and irreverence both are nouns.

Word	Noun	Adjective	Verb	Adverb
sacrilege	Yes	No	No	No
irreverence	Yes	No	No	No

As nouns, irreverence is a hypernym of sacrilege; that is, irreverence is a word with a broader meaning than sacrilege:

sacrilege: blasphemous behavior; the act of depriving something of its sacred character
irreverence: a disrespectful act

Other hypernyms of sacrilege include violation.

sacrilege (noun)	irreverence (noun)
blasphemous behavior; the act of depriving something of its sacred character	a disrespectful act
	an irreverent mental attitude