Lobe and Rake-off

Lobe noun - A rounded projection that is part of a larger structure.

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

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

Lobe and rake-off are semantically related in something produced from separating topic. Sometimes you can use "Lobe" instead a noun phrase "Rake-off".