Cylinder and Vat

Cylinder noun - A surface generated by rotating a parallel line around a fixed line.

Vat and cylinder are semantically related. In some cases you can use "Vat" instead a noun "Cylinder".

Vat noun - A tax levied on the difference between a commodity's price before taxes and its cost of production.

Cylinder and vat are semantically related. Sometimes you can use "Cylinder" instead a noun "Vat".