Friendship is a relationship of mutual affection between people. It is a stronger form of interpersonal bond than an acquaintance or an association, such as a classmate, neighbor, or colleague. Friendship, is a state of enduring affection, esteem, intimacy, and trust between two people. In all cultures, friendships are important relationships throughout a person's life span. It is a dyadic relationship, meaning that it involves a series of interactions between two individuals known to each other. Someone who is a true friend stands up for you. When others try to hurt you emotionally or physically, they do everything they can to make sure you stay safe. They don't care who is trying to harm you; they will defend you anytime, anywhere. If they can help you, they'll do it without reservation or rewar.