A  business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups, businesswoman or  business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups is someone who works in their own business or as a manager in an organization.
An  business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups is someone who starts or  business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups or establishes their own company.
Someone who starts a company is its  business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups. An entrepreneur may found a series of companies or  business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups.
 business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups is used in a positive way to describe the risktaking people who do this, and their activities.
Some entrepreneurs leave the companies they found, perhaps going on to found more companies.
Others may stay to develop and  business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups their businesses.

The plural of businessperson is  business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups. They can be spelled as two words:  business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups, business people.
 business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups is a regular verb: past tense and past participle are founded.
 business personbusinessmanbusinesspeoplebusinesspersonentrepreneurEntrepreneurialEstablishmentFoundfounderfoundsgrowstart-ups is used to talk about the act of founding something as well as a particular organization, or part of one.