Laughter can be categorized into several types based on its context and emotional triggers. One common type is social laughter, which occurs during conversations or group interactions, helping to strengthen bonds and create a sense of belonging. Another type is nervous laughter, often a response to anxiety or discomfort, where individuals laugh to relieve tension in stressful situations. Additionally, there is contagious laughter, where one person's laughter triggers laughter in others, creating a shared experience of joy. Incongruous laughter arises from unexpected or absurd situations, often found in comedy. Each type serves different social and psychological functions, contributing to human interaction.