A bartender is a person.
He serves drinks in a bar or pub.

A barometer is a tool.
It is used to measure pressure.

A wallet is a folding holder.
You can can keep your money and plastic cards in it.

A tent is a shelter. It is made of canvas or a similar material and supported by poles and ropes.

A unicycle is a cycle. It has a single wheel and is typically used by acrobats.

An igloo is an Eskimo house. It is usually made of blocks of snow or ice in the shape of a dome.

A procrastinator is a person. He delays or puts things off that should be done in a timely manner.

A meteorologist is an expert. He reports and forecasts weather conditions.

A barn is an agricultural building. It is usually located on farms and used for various purposes.

A cockpit is the space in the forward fuselage of an airplane. It contains the flying controls and seats for the pilot and copilot.