Car and Tumbril

Car noun - A self-propelled passenger vehicle on four wheels.

Tumbril and car are semantically related In some cases you can use "Tumbril" instead a noun "Car".

Tumbril noun - A farm dumpcart for carrying dung; carts of this type were used to carry prisoners to the guillotine during the French Revolution.

Car and tumbril are semantically related in vehicle topic. You can use "Car" instead a noun "Tumbril".