sky: the upper atmosphere or expanse of space that constitutes an apparent great vault or arch over the earth
noun. The clear blue sky brightens any mood.
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river: a natural stream of water of usually considerable volume
noun, often attributive. The river flooding seems worse each year.
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ice: frozen water
noun, often attributive. Prince Edward is an ice boy.
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planet: any of the large bodies that revolve around the sun in the solar system
noun. We are preparing to orbit the planet.
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moon: the earth's natural satellite
noun. Me, I'm going to the moon.
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sun: the luminous celestial body around which the earth and other planets revolve
noun. So the sun is eight light-minutes away.
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lake: a considerable inland body of standing water
noun. The nearest house is across the lake.
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ocean: the whole body of salt water that covers nearly three fourths of the surface of the earth
noun. And sometimes crashing into the ocean...
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cloud: a visible mass of particles of condensed vapor (such as water or ice) suspended in the atmosphere of a planet (such as the earth) or moon
noun. The ash cloud is causing interference.
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mountain: a landmass that projects conspicuously above its surroundings and is higher than a hill
noun. The sun set behind the mountains.
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sea: a great body of salt water that covers much of the earth
noun. The Mediterranean sea
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desert: arid land with usually sparse vegetation
noun. Lost in a desert of doubt
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orbit: a path described by one body in its revolution about another (as by the earth about the sun or by an electron about an atomic nucleus)
noun. orbit a satellite
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Milky Way: a broad luminous irregular band of light that stretches completely around the celestial sphere and is caused by the light of myriads of faint stars
noun. MILKY WAY GALAXY
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Star: a natural luminous body visible in the sky especially at night
noun, often attributive. He proposed to me by the light of the North Star.