Erin works at a software company, in charge of the help desk. after being yelled at by a customer about the state of her company's software, she becomes angry, and has to take a short break to calm down. what makes her anger an emotion, rather than a mood
Moods are the cause of your emotions. An emotion such as happiness, anger, envy, fear and sadness, could be instantaneous. But if you prolong this and let this affect a majority of your day, then that would be your mood.
