秋
あき · aki · JLPT N5 · noun
fall
🍂🌾 秋 = grain 禾 + fire 火: the season crops ripen and fields are burned
The left part 禾 means grain and the right part 火 means fire. Autumn is harvest time, when grain turns fire-coloured and stubble is burned. For the sound: aki is close to 'a key', so autumn is a key season for the harvest.