This is the 3203rd most frequent German word.
erdgas
Natural gas.
The word 'Erdgas' is used here as a subject noun to represent a type of energy.
Erdgas ist eine wichtige Energiequelle für die Industrie.
Natural gas is an important energy source for the industry.
The word 'Erdgas' is employed as a direct object, indicating what the households use for heating.
Viele Haushalte nutzen Erdgas für das Heizen ihrer Wohnungen.
Many households use natural gas for heating their apartments.
Here, 'Erdgas' acts within a prepositional phrase, indicating the means by which efficiency is achieved.