1. The one that spins is the Cam, while the one going up and down is a Follower.
2. The input movement is rotary.
3. The output movement is reciprocating.
4. The follower goes up and down one time per revolution.
5. The flow of power is not reversible.
6. The direction of power is reversible.
7. Examples of things that this mechanism is used for are camshaft, car pump and also the cars pistons.
"Our parents deserve our honor and respect for giving us life itself. Beyond this they almost always made countless sacrifices as they cared for and nurtured us through our infancy and childhood, provided us with the necessities of life, and nursed us through physical illnesses and the emotional stresses of growing up." ~ Ezra Taft Benson