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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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causal agent, cause, causal agency go
any entity that produces an effect or is responsible for events or results
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agent go
a substance that exerts some force or effect
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drug go
a substance that is used as a medicine or narcotic
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medicine, medication, medicament, medicinal drug go
(medicine) something that treats or prevents or alleviates the symptoms of disease
calcium blocker, calcium-channel blocker
any of a class of drugs that block the flow of the electrolyte calcium (either in nerve cell conduction or smooth muscle contraction of the heart)
noun.artifact

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