It is small. It is yellow. It has four wheels. It can carry 4 to 5 people. It is expensive. What is it?
It is a taxi.
It is big. It is very noisy. It flies in the sky. What is it?
It is a helicopter.
It is big. It is white. It can carry many people. It flies in the sky. What is it?
It is an aeroplane.