Envy vs. Jealousy
Envy is the feeling for getting something that belongs to somebody else while jealousy is the feeling of fear that someone will take away something that belongs to you. Both are different terms and make you to feel inadequate. If you want to have the car of your neighbor, it is envy. If your neighbor lady takes your husband for a ride, then you have the feeling of jealousy with her. Envy is the wish for getting something but Jealousy is the fear of losing your something.

Key Differences
Envy is the wish for getting something but Jealousy is the fear of losing your something.
Envy requires two parties while jealousy requires three parties.
Envy may not always has negative connotation but jealousy does have negative.
Envy and Jealousy Definitions
Envy
A feeling of discontent and resentment aroused by and in conjunction with desire for the possessions or qualities of another. See Usage Note at jealous.
Jealousy
A jealous attitude or disposition. See Usage Note at jealous.
Envy
The object of such feeling
Their new pool made them the envy of their neighbors.
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Jealousy
Close vigilance.
Envy
(Obsolete) Malevolence.
Jealousy
A state of being jealous; a jealous attitude.
Envy
To feel envy toward (another person).
Jealousy
(archaic) A close concern for someone or something, solicitude, vigilance.
Envy
To regard (something) with envy.
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Jealousy
The quality of being jealous; earnest concern or solicitude; painful apprehension of rivalship in cases directly affecting one's happiness; painful suspicion of the faithfulness of husband, wife, or lover.
I was jealous for jealousy.
Jealousy is the . . . apprehension of superiority.
Whoever had qualities to alarm our jealousy, had excellence to deserve our fondness.
Envy
Resentful desire of something possessed by another or others (but not limited to material possessions).
Jealousy
A feeling of jealous envy (especially of a rival)
Envy
An object of envious notice or feeling.
Jealousy
Zealous vigilance;
Cherish their official political freedom with fierce jealousy
Envy
(obsolete) Hatred, enmity, ill-feeling.
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Envy
(obsolete) Emulation; rivalry.
Envy
(obsolete) Public odium; ill repute.
Envy
A red-skinned variety of eating apple.
Envy
(transitive) To feel displeasure or hatred towards (someone) for their good fortune or possessions.
Envy
(transitive) To resentfully or discontentedly desire (something someone else has that one lacks).
Envy
To have envious feelings (at).
Envy
To give (something) to (someone) grudgingly or reluctantly; to begrudge.
Envy
(obsolete) To show malice or ill will; to rail.
Envy
(obsolete) To do harm to; to injure; to disparage.
Envy
(obsolete) To hate.
Envy
(obsolete) To emulate.
Envy
Malice; ill will; spite.
If he evade us there,Enforce him with his envy to the people.
Envy
Chagrin, mortification, discontent, or uneasiness at the sight of another's excellence or good fortune, accompanied with some degree of hatred and a desire to possess equal advantages; malicious grudging; - usually followed by of; as, they did this in envy of Cæsar.
Envy is a repining at the prosperity or good of another, or anger and displeasure at any good of another which we want, or any advantage another hath above us.
No blissEnjoyed by us excites his envy more.
Envy, to which the ignoble mind's a slave,Is emulation in the learned or brave.
Envy
Emulation; rivalry.
Such as cleanliness and decencyPrompt to a virtuous envy.
Envy
Public odium; ill repute.
To lay the envy of the war upon Cicero.
Envy
An object of envious notice or feeling.
This constitution in former days used to be the envy of the world.
Envy
To feel envy at or towards; to be envious of; to have a feeling of uneasiness or mortification in regard to (any one), arising from the sight of another's excellence or good fortune and a longing to possess it.
A woman does not envy a man for his fighting courage, nor a man a woman for her beauty.
Whoever envies another confesses his superiority.
Envy
To feel envy on account of; to have a feeling of grief or repining, with a longing to possess (some excellence or good fortune of another, or an equal good fortune, etc.); to look with grudging upon; to begrudge.
I have seen thee fight,When I have envied thy behavior.
Jeffrey . . . had actually envied his friends their cool mountain breezes.
Envy
To long after; to desire strongly; to covet.
Or climb his knee the envied kiss to share.
Envy
To do harm to; to injure; to disparage.
If I make a lieTo gain your love and envy my best mistress,Put me against a wall.
Envy
To hate.
Envy
To emulate.
Envy
To be filled with envious feelings; to regard anything with grudging and longing eyes; - used especially with at.
Who would envy at the prosperity of the wicked?
Envy
To show malice or ill will; to rail.
Envy
A feeling of grudging admiration and desire to have something possessed by another
Envy
Spite and resentment at seeing the success of another (personified as one of the deadly sins)
Envy
Feel envious towards; admire enviously
Envy
Be envious of; set one's heart on
What is Envy?
Envy is the feeling for getting something that belongs to somebody else. These are the emotions towards someone due to coveting for other person’s belongings. It is your desire to have the possession of somebody else. Envy may also has only a wish but not always has negative connotation. Envy requires two parties.
What is Jealousy?
Jealousy is the feeling of fear that someone will take away something that belongs to you. It is the fear of losing your something. Jealousy is mostly used in relations of love, when a single person is liked by more than one person. Both of them want to have that person. So both have the feeling of jealousy with each other. Jealousy always has negative connotation. Jealousy requires three parties.