client

The word "client" refers to a person, business, or other entity that receives professional services from another party, often in exchange for payment. While similar to "customer," "client" implies a more ongoing and collaborative relationship built on trust and specialized skill. It is the standard term in professions like law, accounting, therapy, design, and consulting. For example, an advertising agency works with clients to develop campaigns, a lawyer represents their client in court, and a financial advisor helps their clients manage long-term investments. The term emphasizes the professional responsibility of the service provider toward the individual or organization they serve.

Historically, "client" comes from the Latin word cliens, referring to someone dependent on a patron for protection—a relationship where loyalty was exchanged for support. While modern business relationships are more transactional, that sense of reliance and specialized assistance remains. This concept also extends into technology: in the digital world, a "client" is a device or program (like a web browser) that requests data or services from a central "server."

You wouldn't typically refer to someone buying groceries as a "client," but you would use the term for the person whose website your company is building. The distinction lies in the nature of the service—it's not just about a simple exchange of goods; it's about receiving professional guidance, technical support, or creative expertise tailored to specific needs. When someone relies on your unique skills for a particular outcome, they are your client.