Jealousy vs. Envy - there is a difference. Merriam-Webster defines "Jealousy" as:A feeling of unhappiness and anger caused by a belief that a loved one might be unfaithful. And "Envy" as:Envy means discontented longing for someone else's advantages.Envy is most often used to refer to a covetous feeling toward another person's attributes, possessions, or stature in life. They go on to say: Many people use jealous to mean the same thing.But they are clearly different.