档次 (dàng cì) is a noun meaning 'grade', 'level', or 'tier', often used to classify things by quality, price, function, or status. The character 档 (dàng) originally referred to a file or category in archives, suggesting classification; 次 (cì) means 'order' or 'sequence', reinforcing the idea of ranking. Together, they form a compound that emphasizes hierarchical positioning — not just numerical order, but qualitative distinction.

This word appears frequently in everyday contexts: product descriptions ('high-end grade'), service packages ('three-tier membership'), education ('student performance levels'), and official documents ('income brackets'). It’s neutral in register but slightly formal or bureaucratic — more common in written Chinese or structured spoken settings (e.g., marketing, policy, or comparisons) than casual conversation. Unlike simple words like 级 (jí), 档次 implies comparison across a spectrum with practical implications — for example, tax rates or subsidy eligibility depend on your income 档次.