A "killer" typically refers to a person or entity that causes the death of another. This term can apply to various contexts, including criminal acts, where an individual intentionally takes another's life, or in nature, where predators hunt and kill for survival. The motivations behind killing can vary widely, from personal disputes to larger societal issues. In legal terms, a killer may be classified as a murderer if the act is premeditated or intentional. Different jurisdictions have specific laws regarding homicide, which can include degrees of murder and manslaughter, reflecting the circumstances and intent behind the act.