Rain barrel and Vat

Rain barrel noun - A barrel used as a cistern to hold rainwater.

Vat and rain barrel are semantically related. In some cases you can use "Vat" instead a noun phrase "Rain barrel".

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

Rain barrel and vat are semantically related. You can use "Rain barrel" instead a noun "Vat".