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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
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physical entity go
an entity that has physical existence
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matter go
that which has mass and occupies space
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substance go
a particular kind or species of matter with uniform properties
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fuel go
a substance that can be consumed to produce energy
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fossil fuel go
fuel consisting of the remains of organisms preserved in rocks in the earth's crust with high carbon and hydrogen content
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coal go
fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
wood coal, lignite, brown coal
intermediate between peat and bituminous coal
noun.substance

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