A hug is a form of endearment, found in virtually all human communities, in which two or more people put their arms around the neck, back, or waist of one another and hold each other closely. If more than two people are involved, it may be referred to as a group hug.

Affection or fondness is a "disposition or state of mind or body" commonly linked to a feeling or type of love. It has led to multiple branches in philosophy and psychology that discuss emotion, disease, influence, and state of being. Often, "affection" denotes more than mere goodwill or friendship. Writers on ethics generally use the word to refer to distinct states of feeling, both lasting and temporary. Some contrast it with passion as being free from the distinctively sensual element.