Describe the differences and similarities between levers and hydraulics

It has been known that the discovery of machines have been one of the most beneficial inventions of all time. These simple machines include levers, wheels gears, pulleys and wedges. Among these machines, lever is more likely confused and associated with hydraulics. To differentiate the two; a lever is machine that has inverse effect of one side when a force is applied on the other side, for example a seesaw. While hydraulic machine is quite more complicated than the aforementioned machines and uses liquid power to do simple work like that of an excavator.