1. Accompanying person: This refers to the person who gives gifts, usually at weddings, birthday parties and other occasions.
2. Fans: This refers to people who give gifts to online celebrities, usually to show their love and support.
3. Secret admirer: This means that the giver secretly loves each other. Usually, he doesn't want the other person to know his name or that he likes him.
Please note that not all these terms are applicable to all situations and cultural backgrounds. In a specific culture and background, there may be other ways to address the giver.