Centipede and Gnat

Centipede noun - Chiefly nocturnal predacious arthropod having a flattened body of 15 to 173 segments each with a pair of legs, the foremost pair being modified as prehensors.

Gnat and centipede are semantically related. In some cases you can use "Gnat" instead a noun "Centipede".

Gnat noun - Any of various small biting flies: midges; biting midges; black flies; sand flies.

Centipede and gnat are semantically related. Sometimes you can use "Centipede" instead a noun "Gnat".