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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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process, physical process go
a sustained phenomenon or one marked by gradual changes through a series of states
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phenomenon go
any state or process known through the senses rather than by intuition or reasoning
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natural phenomenon go
all phenomena that are not artificial
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physical phenomenon go
a natural phenomenon involving the physical properties of matter and energy
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optical phenomenon go
a physical phenomenon related to or involving light
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optical illusion go
an optical phenomenon that results in a false or deceptive visual impression
mirage
an optical illusion in which atmospheric refraction by a layer of hot air distorts or inverts reflections of distant objects
noun.phenomenon

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