The word 客户 is formed by combining two conceptual images: 客 (kè), meaning "guest" or "visitor", and 户 (hù), meaning "household", "door", or "family". Together, they create the idea of a "guest-household", metaphorically representing a patron or buyer who is welcomed through one's door, not as a fleeting visitor, but as a recurring entity with whom one has an ongoing, respectful transactional relationship. This compound visually and notionally frames the commercial client as an honored and familiar party to one's business.