system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
What are few different ways to describe the changing shape of the moon?


assistant
There are a number of ways in which to describe the different moon phases. As the moon appears to grow bigger it is said to be 'waxing', as it decreases in size it is 'waning'. There are a number of different full moons, depending on how many there are in a month and the size of the moon in the sky and when there is no moon due to the earth's shadow covering its surface it is said to be a 'new moon'.