| Subject | Spanish | English |
| mech. | acero al cobalto | cobalt steel |
| tech. | acero de cromo-cobalto | cobalt-chrome steel |
| chem. | acetato de cobalto | cobalt acetate |
| tech. | aleación de aluminio, níquel y cobalto | alnico |
| mater.sc. | aleación de cobalto | cobalt-based alloy |
| tech. | aleación de cobre, aluminio, hierro y cobalto | metaline |
| tech. | aleación de hierro, níquel, cromo y cobalto | fernichrome |
| tech. | aleación de níquel, cobre, cobalto y hierro | monel metal |
| chem. | aleación de tungsteno, carbono y cobalto | carboloy |
| tech. | aleación de volframio, cromo y cobalto | stellite |
| health. | alergia por cobalto | cobalt allergy |
| cultur. | amarillo de cobalto | cobalt yellow |
| chem. | amoniacato de cobalto | cobaltammine |
| chem. | aparato para retirar catalizador de cobalto | de-cobalter |
| nucl.phys. | apoyo de la válvula sin cobalto | cobalt-free valve seating |
| chem. | arseniato de cobalto | cobalt arsenate |
| chem. | arseniosulfuro de cobalto | sulphide and arsenide of cobalt |
| chem. | arseniuro de cobalto | cobalt arsenide |
| gen. | azul cobalto | cobalt blue |
| chem. | azul de cobalto | cobalt blue |
| chem. | azul de cobalto | king's blue |
| gen. | bolita en cobalto | cobalt pellet |
| el. | bomba de cobalto | cobalt gun |
| el. | bomba de cobalto | cobalt bomb |
| chem. | borato de cobalto | cobalt borate |
| tech. | brocas de punta de acero de cobalto | cobalt alloy steel bits |
| chem. | carbonato básico de cobalto monohidratado | basic cobalt carbonate monohydrate |
| chem. | carbonato de cobaltoII | cobalt II carbonate |
| chem. | carbonato de cobalto | cobalt carbonate |
| food.serv. | carbontao de cobalto | cobalt carbonate |
| food.serv. | carbontao de cobalto | cobaltous carbonate |
| chem. | carburo de cobalto | cobalt carbide |
| chem., el. | catalizador de molibdato de cobalto | cobalt molybdate catalyst |
| chem. | cincato de cobalto | cobalt zincate |
| chem. | cloruro de cobalto | cobalt chloride |
| chem. | cobalto brillante | cobalt glance |
| coal. | cobalto metálico | metallic cobalt |
| chem. | cobalto oxidado negro | asbolite |
| chem. | cobalto oxidado negro | earthy cobalt |
| chem. | cobalto oxidado negro | asbolane |
| chem. | cobalto tetracarbonilo | cobalt tetracarbonyl |
| mineral. | combinación nativa de cobalto óxido de manganeso | wad |
| textile | compuesto de cobalto | cobalt compound |
| med. | dermatitis alérgica eccemática por el contacto con el cobalto | cobalt itch |
| chem. | desecantes de cobalto | cobalt driers |
| chem. | diacetato de cobalto II | cobalt II diacetate |
| chem. | dicloruro de cobalto | cobalt dichloride |
| chem. | dinitrato de cobalto II | cobalt II dinitrate |
| chem. | escala de color platino-cobalto | platinum-cobalt colour scale |
| chem. | estannato de cobalto | cobalt stannate |
| chem. | flor de cobalto | erythrite |
| chem. | flor de cobalto | cobalt bloom |
| chem. | fosfato de cobalto | cobalt phosphate |
| chem. | gluconato de cobalto | cobalt gluconate |
| chem. | hidrato de protóxido de cobalto | Co OH2 |
| chem. | hidrato de protóxido de cobalto | cobaltous hydroxide |
| chem. | hidróxido de cobalto | cobalt hydroxide |
| chem. | matas de cobalto | cobalt matte |
| textile | método al cloruro de cobalto | cobalt chloride method |
| industr., construct., chem. | nitrato de cobalto | cobalt nitrate |
| chem. | nitrito de cobalto y potasio | cobalt potassium nitrite |
| chem. | nitrito doble de potasio y cobalto | cobalt potassium nitrite |
| chem. | nitrito doble de potasio y cobalto | K3Co NO26 |
| chem. | nitrito doble de potasio y cobalto | potassium cobaltnitrite |
| chem. | nitrito doble de potasio y cobalto | Fischer's yellow |
| chem. | ortofosfato de cobalto | Co3PO42.8H2O |
| chem. | ortofosfato de cobalto | cobalt orthophosphate |
| chem. | ortofosfato de cobalto | Co3PO42.2H2O |
| pharma. | perla de cobalto 60 | cobalt-60 pearls |
| chem. | quelato de cobalto | cobalt chelate |
| chem. | resinato de cobalto | cobalt resinate |
| chem. | sal de cobalto | cobalt salt |
| chem. | silicato doble de cobalto y de potasio | cobalt potassium silicate |
| chem. | speis de cobalto | cobalt speiss |
| chem. | sulfato de amonio y de cobalto | ammonium cobalt sulphate |
| chem. | sulfato de amonio y de cobalto | CoSO4.NH42SO4.6H2O |
| chem. | sulfato de cobalto II | cobalt II sulphate |
| chem. | sulfato de cobalto | cobalt sulphate |
| chem. | trifluoruro de cobalto | cobalt trifluoride |
| chem. | trióxido de cobalto | cobalt trioxide |
| chem. | tungstato de cobalto | cobaltous tungstate |
| chem. | ultramar de cobalto | cobalt ultramarine |
| chem. | verde cobalto | cobalt green |
| chem. | verde de cobalto | Rinmann's green |
| chem. | verde de cobalto | zinc green |
| chem. | verde de cobalto | cobalt green |
| industr., construct., chem. | vidrio de cobalto | blue glass |
| industr., construct., chem. | vidrio de cobalto | green glass |
| industr., construct., chem. | vidrio de cobalto | inspection glass |
| chem. | vidrio de cobalto | cobalt glass |
| chem. | violeta cobalto | cobalt violet |
| chem. | violeta de cobalto | cobalt violet |
| pharma. | óxido de cobalto | cobaltoxide |
| chem. | óxido de cobalto | cobalt oxide |
| chem. | óxido de cobalto impuro | impure cobalt oxide |