Englishfor English speakers
reflected
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adjective
(especially of incident sound or light) bent or sent back
reflected light
reflected heat
reflected glory
energy
Noun
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Energy is the ability to do work: move, give off heat, give off light, etc.
Unlike coal or oil, atomic energy production creates little air pollution.
Higher electricity prices should help promote energy efficiency.
The amount of energy in 100g or 100ml of food is much higher for foods with a lot of sugar.
She's all full of energy and she can't sit still.
This problem has taken up most of her time and energy for over a year.
density
Noun
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Density is how much stuff fits in a particular area.
The population density of Singapore is one of the highest in the world.
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The density of a material is how closely packed its atoms are.
The density of water is higher than the density of steam.