Now, Im going to talk more about mechanism.
This are some few examples on Mechanisms terms:
LINEAR MOTION - motion in a straight line eg. the motion of a train
ROTARY MOTION - circular motion eg. the motion of a bicycle wheel
RECIPROCATING MOTION - repeating backwards and forwards motion eg. the motion of a piston in a car engine
OSCILLATING MOTION - repeating forwards and backwards circular motion eg. the motion of a clock pendulum
EQUILIBRIUM - a state of balance when both sides are equal
FULCRUM - pivot, a point about which things rotate
LINKAGES - two or more levers connected to produce a desired motion