deadly sin vs ira

deadly sin and ira both are nouns.

Word	Noun	Adjective	Verb	Adverb
deadly sin	Yes	No	No	No
ira	Yes	No	No	No

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

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

deadly sin (noun)	ira (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)