Empathy vs Sympathy_ Which one are you

Feeling bad for someone is not the same as empathy. Empathy is the ability to understand the emotions of someone else without feeling the emotions. Sympathy is the physical display of empathy. You hug them, you try to put yourself in their shoes. Psychopaths have empathy but they don't have sympathy. Altruism is detached and emotionless, based on doing what is right. Which ones do you relate to? Does this video help clarify the difference between empathy, sympathy and altruism?