It is, however, used by the ǃXoon for all Taa speakers. It has been variously spelled "ǃxō, ǃkɔ̃ː, ǃko/ǃkõ, Khong," and the fully anglicized "Koon". Bleek's Nǀuǁʼen dialect has been spelled "ǀNuǁen, ǀNuǁe꞉n, Ngǀuǁen, Nguen, Nǀhuǁéi, ŋǀuǁẽin, ŋǀuǁẽi, ŋǀuǁen, ǀuǁen." It has also been called by the ambiguous Khoekhoe term "Nǀusan (Nǀu-san, Nǀūsā, Nǀuusaa, Nǀhusi)," sometimes rendered "Nusan" or "Noosan", which has been used for other languages in the area. A subgroup was known as "Koon" . This dialect is apparently extinct. Bleek recorded another now-extinct variety at the town of Khakhea, and it is known in the literature as "Kakia". Names with a tee: "Katia, Kattea, Khatia," and "Xatia," are apparently spelling variants of "Kakia", though this is not certain. "Vaalpens", "ǀKusi", and "ǀEikusi" evidently refer to the same variety as Xatia. Westphal studied a variety rendered "ǀŋamani, ǀnamani, Ngǀamani, ǀŋamasa". This dialect is apparently also now extinct. Westphal also studied ǂHuan (ǂhũa) dialect (or "ǂHũa-ʘwani"), and used this name for the entire language. However, the term is ambiguous between Taa (Western ǂHũa) and ǂʼAmkoe (Eastern ǂHũa), and for this reason Traill chose to call the language "ǃXóõ". Tsaasi dialect is quite similar to ǂHuan, and like "ǂHuan," the name is used ambiguously for a dialect of ǂʼAmkoe.