Caviller and Porcupine

Caviller noun - A disputant who quibbles; someone who raises annoying petty objections.

Porcupine and caviller are semantically related. In some cases you can use "Porcupine" instead a noun "Caviller".

Porcupine noun - Relatively large rodents with sharp erectile bristles mingled with the fur.

Caviller and porcupine are semantically related. Sometimes you can use "Caviller" instead a noun "Porcupine".