As your body gets cold, your blood retreats toward your center mass in an effort to protect your vital organs.

Consumer Primacy is the process on which entire field of marketing rests. This principle insists that the consumer should be at the center of the marketing effort

The Effort (or moment) Arm of a screwdriver would be the largest radius of the handle frop the center, ie. the radius of a cylinder. You can use any unit vector along a radius, because they will all yield the same torque (or moment).

In sailing terms, probably Center of Force of the sail plan. I.E. the focal point of the entire sail plan as a whole's effort.

THE PRODUCT OF EFFORT AND EFFORT ARM IS CALLED MOMENT OF EFFORT.