envy vs deadly sin

envy and deadly sin both are nouns.

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

As nouns, deadly sin is a hypernym of envy; that is, deadly sin is a word with a broader meaning than envy:

envy: spite and resentment at seeing the success of another (personified as one of the deadly sins)
deadly sin: an unpardonable sin entailing a total loss of grace

Other hypernyms of envy include mortal sin.

envy (noun)	deadly sin (noun)
spite and resentment at seeing the success of another (personified as one of the deadly sins)	an unpardonable sin entailing a total loss of grace
a feeling of grudging admiration and desire to have something that is possessed by another

envy (verb)	deadly sin (verb)
be envious of; set one's heart on
feel envious towards; admire enviously