Please give a detailed explanation for each part of the question.  What is the different between group cohesiveness and sense of individual identity?

Cohesiveness in a group or team refers to how well its members work together and feel emotionally connected to one another. It reveals how much people in the organisation care for and trust one another and how committed they are to the group's goals. Cohesive groups have members who know and care about each other, work together well and are invested in the group's success. If a group is cohesive, its members are more likely to work together, talk to one another, and solve problems as a team, all of which can boost the group's efficiency and productivity.