Clod and Half-wit

Clod noun - A big clumsy often slow-witted person.

Half-wit and clod are semantically related In some cases you can use "Half-wit" instead a noun "Clod".

Half-wit noun - A person who lacks good sense or judgment.

Clod and half-wit are semantically related in stupid person topic. Sometimes you can use "Clod" instead a noun phrase "Half-wit".