Defenses refer to the strategies and mechanisms that individuals or groups use to protect themselves from harm, threats, or challenges. In psychology, defenses can include mental processes that help people cope with stress or anxiety, such as denial or rationalization. In legal contexts, defenses are arguments presented in court to justify or excuse a defendant's actions, such as self-defense or insanity. In sports, defenses are tactics employed by teams to prevent the opposing team from scoring. For example, in football, a strong defense might involve players working together to block passes or tackle opponents. Overall, defenses play a crucial role in various fields, helping to maintain safety and stability.