采购 (cǎigòu) refers to the formal process of purchasing goods or services—especially for businesses, government agencies, or institutions. It emphasizes organized, often large-scale acquisition rather than casual shopping. The first character 采 (cǎi) means 'to gather' or 'to collect', and the second 购 (gòu) means 'to buy'. Together, they convey the idea of actively sourcing and acquiring needed items through official channels, contracts, or supplier relationships.

This term is common in corporate, administrative, and logistical contexts—not daily personal shopping. You’ll see it in job titles (e.g., 采购经理 'procurement manager'), company departments (采购部), and official documents. While it can function as a verb ('to procure'), it’s more frequently used as a noun meaning 'procurement' or 'purchasing activities'. It carries a professional, formal register and is rarely used for buying groceries or clothes.