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1.Someone who is the main cook (= person who cooks) in a hotel or a restaurant
Confectioner
Chef

2.Someone who travels to places where no one has ever been in order to find out what is there
Discover
Explorer

3.Someone whose job is to stop fires burning
Firefighter
Model

4.Someone who travels into space:
Author
Astronaut

5.A driver of a large vehicle that carries passengers by road, usually along a fixed route:
Butcher
Bus driver

6.A person whose job is making and repairing wooden objects:
Carpenter
Draper