noun
forest fire; wildfire; bushfire
Refers to a fire in mountains, forests, or wildland areas; it is not the usual word for an ordinary house or building fire.
強風で山火事が一気に広がった。
The wildfire spread rapidly because of the strong wind.
消防隊が山火事の消火に当たっている。
Firefighters are working to extinguish the forest fire.
A more formal or technical term for a forest fire; 山火事 is the everyday compound.
A transparent compound of 山, 'mountain,' and 火事, 'fire'; the spelling directly reflects the meaning 'mountain/forest fire.'