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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
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mineral go
solid homogeneous inorganic substances occurring in nature having a definite chemical composition
solid homogeneous inorganic substances occurring in nature having a definite chemical composition
opal
a translucent mineral consisting of hydrated silica of variable color
a translucent mineral consisting of hydrated silica of variable color
noun.substance
3 Subcategories