Common traits are characteristics or qualities that are frequently observed in individuals or groups. These traits can include aspects like honesty, kindness, and responsibility, which are often valued in various cultures. They help define a person's behavior and can influence how they interact with others. In addition to personal qualities, common traits can also refer to shared features among species or objects. For example, mammals typically have traits such as warm-bloodedness and hair or fur. Recognizing these traits helps in understanding relationships and classifications within biology and social contexts.