تبادل تجاري بين الشركة والعميل= business to customer
تبادل تجاري بين شركة وأخرى=business to business
ويكيبيديا تطلق عليها اعمال-أعمال

عميل عادي أو شركة

B2B (business-to-business) marketing is marketing of products to businesses or other organizations for use in production of goods, for use in general business operations (such as office supplies), or for resale to other consumers, such as a wholesaler selling to a retailer.

B2C (business-to-consumer)
The definition of business-to-consumer sales refers to a sales model in which business target individual consumers. Examples of B2C sales reps would be a sales reps selling cars, gym memberships, or stereo systems.