A kiss is a physical gesture where one person presses their lips against another person or an object. Kisses can express a variety of emotions, including love, affection, friendship, or greeting. They are often seen in romantic relationships but can also occur between family members and friends. Different cultures have unique customs regarding kissing, such as the French kiss, which involves the use of the tongue. Kissing can have psychological and physiological effects. It can release hormones like oxytocin, which promotes bonding and reduces stress. Additionally, kissing can enhance intimacy between partners and strengthen relationships. Overall, kisses are a universal form of communication that convey feelings without words.