A person that helps you when you are shoping in a supermarket, fot example, is....
a shop assistant
a person, especially a woman, who serves food in a restaurant is...
a waitress
A person formally educated and trained in the care of the sick people is...
a nurse
A person who arranges or cuts hair is
a hairdresser
A person who constructs buildings is
a builder
a person, especially a man, who serves food in a restaurant is...
a waiter
A person who repairs cars is
a mechanic
He/She cooks especially in a restaurant or hotel.
A chef
A person who drives the bus is...
a bus driver
A man regularly employed in business is a
businessman
A woman regularly employed in business is a
a businesswoman