The term CORE WORK GROUP can be summarized as a CADRE, which is a French word meaning a group of people with a shared purpose or goal. This type of group is typically composed of experienced and knowledgeable individuals who are able to provide guidance and support to the rest of the team. The members of a CADRE are usually chosen for their expertise in a particular field or area of knowledge. They are often responsible for providing leadership and direction to the team, as well as helping to ensure that the team's goals are met.