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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

matter go
that which has mass and occupies space

substance go
the real physical matter of which a person or thing consists

material, stuff go
the tangible substance that goes into the makeup of a physical object

color, colour, coloring material, colouring material go
any material used for its color

pigment go
dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)

animal pigment
pigment occurring in animals

noun.substance

4 Subcategories

bilirubin, hematoidin, haematoidin go
an orange-yellow pigment in the bile that forms as a product of hemoglobin
urobilin go
brown bile pigment formed from urobilinogens and found in feces and in small amounts in urine
luciferin go
pigment occurring in luminescent organisms (as fireflies)
melanin go
insoluble pigments that account for the color of e.g. skin and scales and feathers