| Subject | English | Spanish |
| account. | coal, oil and natural gas reserves | reservas de carbón, petróleo y gas natural |
| energ.ind. | Committee of Experts on the Transit of Natural Gas through Grids | Comité de expertos en materia de tránsito de gas natural por las grandes redes |
| energ.ind. | Committee of Experts on the transit of natural gas through grids | Comité de expertos en materia de tránsito de gas natural a través de las grandes redes |
| energ.ind. | Committee of Experts on the Transit of Natural Gas through Grids | Comité de expertos en materia de tránsito de gas natural a través de las grandes redes |
| energ.ind. | compressed natural gas | gas natural comprimido |
| gen. | conventional natural gas | gas convencional |
| energ.ind. | distribution of natural gas | distribución |
| chem., el. | dry natural gas | gas natural "seco" |
| coal., chem. | European Natural Gas Vehicle Association | Asociación Europea de Vehículos de Gas Natural |
| energ.ind. | European Union of the Natural Gas Industry | Eurogas |
| energ.ind. | European Union of the Natural Gas Industry | Unión Europea de la Industria del Gas Natural |
| coal. | exploration for petroleum and natural gas | prospección de petróleo y de gas natural |
| coal. | extraction and purifying of natural gas | extracción y depuración de gas natural |
| coal. | extraction of petroleum and natural gas | extracción de petróleo y de gas natural |
| coal. | gas,natural and manufactured | gas natural y gas manufacturado |
| energ.ind. | high-pressure natural gas transmission grid | gran red de transporte del gas natural a alta presión |
| energ.ind., industr. | high-pressure natural gas transmission grid | red de transporte de gas natural a alta presión |
| transp., el. | hydrogen-natural gas mixture | mezcla de gas natural e hidrógeno |
| energ.ind. | internal market in natural gas | mercado interior del gas natural |
| auto. | liquefied natural gas | gas líquido natural (LNG) |
| energ.ind. | liquefied natural gas | gas natural licuado |
| transp., energ.ind. | liquefied natural gas carrier | buque de transporte de gas natural licuado |
| transp., energ.ind. | liquefied natural gas carrier | metanero |
| gen. | liquefied natural gas carrier | buque GNL |
| transp., nautic., energ.ind. | liquid natural gas carrier | buque metanero |
| transp., nautic., energ.ind. | liquid natural gas carrier | metanero |
| energ.ind. | liquid natural gas terminal | terminal para gas líquido |
| environ. | natural gas A natural fuel containing methane and hydrocarbons that occurs in certain geologic formations | gas natural |
| econ. | natural gas | gas natural |
| earth.sc., life.sc. | natural gas deposit | yacimiento de gas natural |
| chem., el. | natural gas distillate | destilado del gas natural |
| el. | natural gas distribution network | red de distribución de gas natural |
| environ. | natural gas exploration | exploración de gas natural y petróleo |
| environ. | natural gas exploration Underground prospection conducted with various methods to discover natural gas deposits which are usually found in the immediate vicinity of crude petroleum | exploración de gas natural y petróleo |
| environ. | natural gas extraction The tapping of natural gas from wells located under the sea and in general from underground sources often in association with petroleum deposits; it is used as a fuel, having largely replaced coal-gas for this purpose, and as a source of intermediates for organic synthesis | extracción de gas natural |
| environ. | natural gas extraction | extracción de gas natural |
| chem., el. | natural gas extraction | extracción del gas natural |
| chem., el. | natural gas field | campo de gas natural |
| stat., chem. | natural gas liquid | líquido de gas natural |
| stat., chem. | natural gas liquid | condensado de gas natural |
| earth.sc., life.sc. | natural gas pool | yacimiento de gas natural |
| meteorol. | natural gas power plant | central eléctrica de gas |
| chem., el. | natural gas production | extracción del gas natural |
| environ., industr. | natural gas purification | purificación de gas natural |
| earth.sc., life.sc. | natural gas reservoir | yacimiento de gas natural |
| transp., energ.ind. | natural gas transmission network | red de transporte de gas natural |
| auto. | natural gas vehicle | vehículo de gas natural |
| med. | natural medicinal gases | gas medicinal natural |
| nucl.phys. | natural uranium-gas-graphite reactor | reactor de uranio natural-gas-grafito |
| account. | oil and natural gas | petróleo y gas natural |
| met. | oxy-natural gas cutting | oxicorte con gas natural |
| met. | oxy-natural gas flame spraying | proyección por llama oxi-gas natural |
| coal. | poisoning by natural gases | intoxicaciones por gas natural |
| energ.ind. | substitute natural gas | gas natural de sustitución |
| agric., chem. | substitute natural gas | GNS |
| energ.ind. | substitute natural gas | gas natural sintético |
| agric., chem. | synthetic natural gas | GNS |
| agric., chem. | synthetic natural gas | gas natural de sustitución |
| energ.ind. | synthetic natural gas | gas natural sintético |
| el. | trans-European network for the transport of natural gas | interconexión transeuropea de transporte de gas natural |
| energ.ind. | transit of natural gas between grids | tránsito de gas natural entre grandes redes |
| fin., energ.ind. | transit of natural gas through the major systems | tránsito de gas natural en las grandes redes |
| energ.ind. | unconventional natural gas | gas no convencional |
| environ. | wastes from natural gas purification | Residuos de la purificación del gas natural |
| environ. | wastes from natural gas purification | residuos de la purificación del gas natural |
| environ. | wastes from natural gas purification and transportation | residuos de la purificación del gas natural |
| environ. | Wastes from petroleum refining, natural gas purification and pyrolytic treatment of coal | Residuos del refino de petróleo, purificación del gas natural y tratamiento pirolítico del carbón |
| environ. | wastes from petroleum refining, natural gas purification and pyrolytic treatment of coal | residuos del refino de petróleo, purificación del gas natural y tratamiento pirolítico del carbón |
