Cockroach and Rodent

Cockroach noun - Any of numerous chiefly nocturnal insects; some are domestic pests.

Rodent and cockroach are semantically related. In some cases you can use "Rodent" instead a noun "Cockroach".

Rodent noun - Relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing.

Cockroach and rodent are semantically related. Sometimes you can use "Cockroach" instead a noun "Rodent".