customer

Compared meaning: a person who pays for goods or services (noun).

比较义项：付费接受服务或购买商品的人（名词）。

• client

  Used for a person who receives professional services or advice, such as from a lawyer, accountant, or consultant; suggests a more formal, ongoing professional relationship.

  用于接受专业服务或建议的人，例如律师、会计师或顾问的客户；暗示一种更正式、持续性的专业关系。

  The lawyer met her client to discuss the new contract.

  律师与她的client见面，商讨新合同事宜。

• customer 本词

  Used for a person who buys goods or services from a business such as a shop, restaurant, or company; a more everyday, general term.

  用于从商店、餐厅或公司等企业购买商品或服务的人；是更日常、更通用的说法。

  The customer complained that her coffee was too cold.

  这位customer抱怨她的咖啡太凉了。

Both words mean a person who pays for goods or services. Client is used for someone receiving professional services, like from a lawyer. Customer is used for someone buying from a shop or company; more everyday and general. Not compared: client's computing sense.

这两个词都指付钱换取商品或服务的人，但client多用于律师、会计师、顾问等专业服务关系中，customer多用于商店、餐厅、公司等一般买卖场景中购买商品或服务的人。这里不比较client在计算机领域中表示“客户端”的意思。