Piàn-chéng (Eng-gí: variety) tī si̍t-bu̍t-ha̍k hō-miâ-hoat lāi-bīn sī chí chi̍t-ê hun-lūi-ha̍k hun-kip. Pún kip tiām chéng kap á-chéng ē-kha, tǐ hêng (form) téng-bīn.

Tōng-bu̍t-ha̍k ū-sî ēng tio̍h "piàn-chéng" chi̍t jī, chóng-sī bô siū Kok-chè Tōng-bu̍t-ha̍k Hō-miâ-hoat Kui-iok ê koán-lí.