irreligious vs impious

irreligious and impious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
irreligious	No	Yes	No	No
impious	No	Yes	No	No

irreligious (adjective)	impious (adjective)
hostile or indifferent to religion	lacking piety or reverence for a god
	lacking due respect or dutifulness