Compter les occurrences : 次, 遍, 回, 趟

• 次 (cì) : The general term. [cite_start] Indicates repetition without specifying the duration [cite: 182, 1180].
• 遍 (biàn) : Indicates that the action is done entirely, from start to finish (e.g., reading a book entirely) [cite: 182, 1202].
• 回 (huí) : Synonymous with cì, more colloquial or dialectal [cite: 186, 1198].
• 趟 (tàng) : Specific to journeys (round trip) [cite: 186, 1217].

Multiplication: 倍 (bèi) and 乘 (chéng)

• 倍 (bèi) : "Times more". [cite_start] Used in everyday language (e.g., liǎng bèi, double) [cite: 187, 1220].
• 乘 (chéng) : "Multiply by". [cite_start] Formal mathematical term [cite: 187, 1220].