- Traditional Chinese Character(HanT):
凹凸
- Simplified Chinese Character(HanS):
凹凸
- Bopomofo(Mandarin Phonetic Symbols): ㄠ ㄍㄨˇ (ㄠㄍ)
- Bopomofo(Zhuyin Keyboard Input/IME): "l ej3" (lej3)
- (ASCII) Hanyu Pinyin: "aogu" "Ao1Gu3" "Ao1 Gu3" (AG)
- (Latin) Hànyǔ Pīnyīn: Gǔ [ Gǔ ]
- (英文翻譯) English Translation: "Concave and convex"
- (西語翻譯) Traducción Español: "Cóncavo y convexo"
- (日文翻譯) 日本語翻訳: "凹凸"