theme; subject; motif
theme for the Imperial New Year's Poetry Contest
「御題」 has another reading with different meanings.
今日の御題は「最近あった面白い話」です。
Today's theme is "a funny story that happened recently."
大喜利の御題が発表された。
The theme for the 'Ōgiri' comedy show was announced.
この御題で絵を描くのは難しい。
It's difficult to draw a picture with this theme.