Coleoidea is a technical word, though, and ปลาหมึก isn't. Ordinary people use ปลาหมึก to refer to all of them, but they might not use that same word to describe

Coleoidea is a technical word, though, and ปลาหมึก isn't. Ordinary people use ปลาหมึก to refer to all of them, but they might not use that same word to describe e.g. nautiloids. It doesn't map neatly on our technical language.