Synonyms for Carbon (same or very similar meaning)
WordNet sense 1 (a thin paper coated on one side with a dark waxy substance (often containing carbon); used to transfer characters from the original to an under sheet of paper):
carbon paper
WordNet sense 2 (an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds):
c
WordNet sense 3 (a copy made with carbon paper):
carbon copy
From the ODE community, based on WordNet
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