This is the 7935th most frequent German word.
hitzewellen
Heat waves.
In this sentence, 'Hitzewellen' refers to the meteorological phenomena of prolonged high temperatures, denoting plural occurrences.
Die Hitzewellen in der Region werden immer häufiger.
The heatwaves in the region are becoming more frequent.
Here, 'Hitzewellen' is used in the context of giving advice on handling extreme heat conditions, again plural and specific occurrences.
Während der Hitzewellen sollte man ausreichend Wasser trinken.
During heatwaves, one should drink sufficient water.
In this instance, 'Hitzewellen' highlights the consequences caused by such climatic events, emphasizing their impact and occurrence.