Together, 债 (debt) + 权 (right) + 人 (person) creates a very logical and transparent term: “the person who holds the rights to a debt.”
The term 债权人 (zhàiquánrén) is almost exclusively used in formal, legal, or commercial contexts. Its usage reflects a clear separation between personal relationships and formal financial obligations in Chinese culture. While borrowing and lending among friends and family is common, you would almost never refer to a friend who lent you money as a 债权人. Doing so would sound incredibly cold, distant, and legalistic, as if you are framing the friendly favor as a sterile business transaction. It immediately removes the element of `人情 (rénqíng)`—the social capital and mutual obligation—and replaces it with the cold letter of the law. In contrast to Western cultures where “creditor” can sometimes be used more broadly, 债权人 firmly places the relationship within a legal or commercial framework. It implies contracts, interest rates, and potential legal action. This distinction is important: a friend is a friend, but a 债权人 is a party in a formal agreement.
You will encounter 债权人 most frequently in specific, formal situations.