Clambake and Rake-off

Clambake noun - A cookout at the seashore where clams and fish and other foods are cooked--usually on heated stones covered with seaweed.

Rake-off and clambake are semantically related. In some cases you can use "Rake-off" instead a noun "Clambake".

Rake-off noun - A percentage (of winnings or loot or profit) taken by an operator or gangster.

Clambake and rake-off are semantically related. Sometimes you can use "Clambake" instead a noun phrase "Rake-off".