Why is it called silicon carbide not silicon monocarbide?

Either is acceptable. Other names include Silicon carbide, SiC, Silicon(IV) carbide, Silicon carbide (SiC), Silicon carbide, Carbogran, Carbomant, Carborex, Carborundum, Carsilon, Exolon, Lonsicar, Meccarb, Resilon, Silicone carbide, Silundum, Simax