A net is a device, made of fabric or rope stitched together, used to catch things such as fish or butterflies. Net can also refer to profits.
There are many nets, but two kinds have to do with catching things and making profit. The first net is like a fisherman's net: it's a type of meshing (meaning it has holes) made from rope or wire. This net is used to catch fish, and the holes allow the water to pour out. Also, someone's net worth is how much money they have. A net profit is a company’s earnings. A larger net means more money.