How are "team sports" defined?

Team sports are defined as activities that require cooperation among teammates to achieve a common goal, typically competing against another team. This emphasis on collaboration is fundamental, as players must work together, utilize their individual skills harmoniously, and communicate effectively to succeed. Examples include basketball, soccer, and volleyball, where strategic plays and collective effort are critical for victory.

The other definitions do not capture the essence of team sports. Individual play does not involve teammates, and skills reliant on personal performance alone do not facilitate cooperation. Additionally, team sports can be played in various environments, both indoors and outdoors, which invalidates the notion that they are exclusively outdoor activities.