This paper discusses and compares definitions of the terms business-to-consumer (B2C) and business-tobusiness (B2B) e-commerce to assist the e-business community to take better advantage of the potential of the ecommerce medium. The absence of consensual definitions in terminology may be preventing the e-business community from taking full advantage of the unique characteristics that the medium provides. A definition of B2C e-commerce is proposed. Finally, the paper notes the overlapping nature of B2B and B2C e-commerce.