firewood and charcoal; fuel
Refers to wood and charcoal as fuel, often in contexts of heating, cooking, or traditional energy sources. The term is somewhat formal and appears in economic or environmental discussions.
We secure a supply of firewood and charcoal in preparation for winter.
In this region, firewood and charcoal are essential for heating in winter.
The price of firewood and charcoal is soaring.
Firewood and charcoal are running short because of the cold wave.
炭 refers only to charcoal, whereas 薪炭 covers both charcoal and firewood together as fuel.
Compound of 薪 (firewood) and 炭 (charcoal). The reading is on'yomi for both characters.