"Death" refers to the end of life, marking the cessation of biological functions that sustain an organism. It is a natural part of the life cycle and can occur due to various reasons, including illness, accidents, or old age. Different cultures have unique beliefs and practices surrounding death, influencing how individuals perceive and respond to it. "Mourning" is the process of expressing grief and sorrow after the loss of a loved one. It often involves rituals, such as funerals or memorial services, which help individuals and communities honor the deceased. Mourning practices can vary widely, reflecting cultural traditions and personal beliefs about life and death.