Jealousy is a complex emotion marked by insecurity and fearing the loss of something important. It is highlighted by feelings of abandonment and anger. Jealousy is distinct from envy (although the two are often used interchangeably) in that envy is the want of something that belongs to another person. Someone feels jealousy when they see a person flirting with their significant other and what makes it jealousy is that they fear the loss of their partner to another person. A person feels envy when they see someone driving a car that they desire.