The word **采购** (cǎigòu), meaning "to purchase" or "procurement," is a compound word formed by combining two individual characters with related meanings. The first character, **采** (cǎi), carries the core meaning of "to gather," "to pick," or "to select." The second character, **购** (gòu), specifically means "to buy" or "to purchase." When combined, they create a logical and sequential concept: **采** (selecting/choosing) followed by **购** (buying), which accurately describes the complete process of procurement—first evaluating and choosing goods or suppliers, and then formally acquiring them. This formation is typical of modern Chinese, where two synonymous or semantically linked characters are joined to express a more precise or professional nuance than either character alone.