One U.S. military researcher has drawn a distinction between teamwork and unit cohesion—claiming teamwork as being merely "collaboration", while unit cohesion involves a bond that can sustain mutual commitment, not just to the mission, but to each other, and to the group as a whole. This added bond, he argued, enabled teamwork under conditions under which an organization might otherwise break down.
https://en.wikipedia.org/wiki/Unit_cohesion?wprov=sfti1