Treadmills Vs Eliptical

treadmills
(treadmill) an exercise device consisting of an endless belt on which a person can walk or jog without changing place
(treadmill) a job involving drudgery and confinement
A device formerly used for driving machinery, consisting of a large wheel with steps fitted into its inner surface. It was turned by the weight of people or animals treading the steps
(treadmill) a mill that is powered by men or animals walking on a circular belt or climbing steps
An exercise machine, typically with a continuous belt, that allows one to walk or run in place
A job or situation that is tiring, boring, or unpleasant and from which it is hard to escape

eliptical
In geometry, an ellipse (from Greek ???????? elleipsis, a "falling short") is a plane curve that results from the intersection of a cone by a plane in a way that produces a closed curve. Circles are special cases of ellipses, obtained when the cutting plane is perpendicular to the axis.