mortal sin vs anger

mortal sin and anger both are nouns.

Word	Noun	Adjective	Verb	Adverb
mortal sin	Yes	No	No	No
anger	Yes	No	Yes	No

As nouns, anger is a hyponym of mortal sin; that is, anger is a word with a more specific, narrower meaning than mortal sin:

mortal sin: an unpardonable sin entailing a total loss of grace
anger: belligerence aroused by a real or supposed wrong (personified as one of the deadly sins)

mortal sin (noun)	anger (noun)
an unpardonable sin entailing a total loss of grace	belligerence aroused by a real or supposed wrong (personified as one of the deadly sins)
	a strong emotion; a feeling that is oriented toward some real or supposed grievance
	the state of being angry

mortal sin (verb)	anger (verb)
	make angry
	become angry