A dichotomy is something divided into non-overlapping parts or opinions.

 A dichotomy refers to a division into two mutually exclusive and often contradictory groups or entities. In the context of the question, ‘cooperative’ and ‘competitive’ represent two distinct approaches or mindsets that do not overlap. Cooperation implies working together towards a common goal, while competition involves individuals or groups working against each other to achieve a goal. These concepts are fundamentally different and cannot coexist within the same framework, making them a clear example of a dichotomy.

References: The explanation provided is based on general knowledge of dichotomies and their application in various fields, including project management. For a detailed understanding, it is recommended to refer to the official PPM study materials and the PMBOK guide.