jealousy vs envy

jealousy and envy both are nouns.

Word	Noun	Adjective	Verb	Adverb
jealousy	Yes	No	No	No
envy	Yes	No	Yes	No

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

jealousy: a feeling of jealous envy (especially of a rival)
envy: a feeling of grudging admiration and desire to have something that is possessed by another

Other hypernyms of jealousy include enviousness.

jealousy (noun)	envy (noun)
zealous vigilance	spite and resentment at seeing the success of another (personified as one of the deadly sins)
a feeling of jealous envy (especially of a rival)	a feeling of grudging admiration and desire to have something that is possessed by another

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