'"Envy" and "jealousy" are often used interchangeably, but in correct usage they stand for two different distinct emotions. In proper usage, jealousy is the fear of losing something that one possesses to another person (a loved one in the prototypical form), while envy is the pain or frustration caused by another person having something that one does not have oneself. Envy typically involves two people, and jealousy typically involves three people. It is possible to be envious of more than one individual at any given time. -- Both envy and jealousy are etymologically related to schadenfreude, the rejoicing at, or taking joy in, or getting pleasure from the misfortunes of others.' - Adam Crowe