Here's why and some examples:
It's Contextual:
* Company Name: The most common proper noun for a business is its official name. For example, "Google" is the proper noun for the search engine company.
* Brand Name: Sometimes, a business might have a brand name that's distinct from its legal name. For example, "Nike" is the brand name of the company "Nike, Inc."
* Specific Business: If you're referring to a specific business within a larger organization, you'd use the name of that business. For example, "Google Maps" is the proper noun for the mapping service within the company Google.
Examples:
* General Motors (Company name)
* Amazon (Brand name)
* Starbucks Coffee (Specific business within a larger organization)
Instead of using a proper noun, you can also use phrases like:
* The business
* This company
* Our organization
Ultimately, the best way to choose the proper noun for "business" is to consider the specific context and what you want to emphasize.