Final answer:
The common noun for Best Toy Inc. is 'corporation,' which is a legally authorized single entity, often part of a conglomerate and using trademarks and brand reputation to distinguish itself in the market.
Step-by-step explanation:
The common noun for Best Toy Inc. is 'corporation.' A corporation is defined as a group of people authorized by law to act as a single entity and is usually established for the purpose of making money. In the context of international business, a corporation such as Best Toy Inc. might be part of a larger conglomerate, like Ford Motor Company, which operates under one name but produces a variety of products globally. These corporations rely on factors such as trademarks, which distinguish their products and can include a distinctive word, name, symbol, or style. For example, Best Toy Inc. could trademark a unique toy design, which customers would associate with their brand. Additionally, corporations might focus on building a well-respected brand name over many years, contributing significantly to the company's reputation and consumer trust.