sky: the area above the earth, in which clouds, the sun, etc. can be seen
noun, the sky is beautiful
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river: a natural wide flow of fresh water across the land into the sea, a lake, or another river
noun, the largest river is the amazonas
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ice: water that has frozen and become solid, or pieces of this
noun, Antarctica is made of ice
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planet: an extremely large, round mass of rock and metal, such as Earth, or of gas, such as Jupiter, that moves in a circular path around the sun or another star
noun, the solar system have planets
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moon: the round object that moves in the sky around the earth and can be seen at night
noun, the moon is beautiful
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sun: the star that provides light and heat for the earth and around which the earth moves
noun, the sun is hot
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lake: a large area of water surrounded by land and not connected to the sea except by rivers or streams
noun, the lake is big
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ocean: a very large area of sea
noun, the pacific ocean is the biggest of the world
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cloud: a grey or white mass in the sky, made up of very small floating drops of water
noun, the clouds are big
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mountain: a raised part of the earth's surface, much larger than a hill, the top of which might be covered in snow
noun, the mountains are tall
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sea: the salty water that covers a large part of the surface of the earth, or a large area of salty water, smaller than an ocean, that is partly or completely surrounded by land
noun, the planet have very much seas
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desert: an area, often covered with sand or rocks, where there is very little rain and not many plants
noun, the desert of sahara is the biggest of the world
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orbit: the curved path through which objects in space move around a planet or star
noun, the sun have the planets in a orbit
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milky way: the galaxy (star system) that includes the earth, seen at night as a pale strip across the sky
noun, the milky way is the home of the solar system
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star: a very large ball of burning gas in space that is usually seen from the earth as a point of light in the sky at night