Share: Obsessive-compulsive disorder (OCD) is an illness that causes people to have unwanted thoughts (obsessions) and to repeat certain behaviors (compulsions) over and over again.We all have habits and routines in our daily lives, such as brushing our teeth before bed.hare: Obsessive-compulsive disorder (OCD) is an illness that causes people to have unwanted thoughts (obsessions) and to repeat certain behaviors (compulsions) over and over again.
Leverage definition, the action of a lever, a rigid bar that pivots about one point and that is used to move an object at a second point by a force applied at a third. See more. Dictionary.com
Levers are mechanical devices used to scale the amount of force and/or travel in a mechanism.Levers are a versatile mechanism that can be used in a wide range of applications from small to large.