1 文書を見つけるための辞書。

• theme, subject, topic
• トピック, サブジェクト, 話頭, テーマ, 主題, 題目, 題, 話柄, 話題, 件
• the subject matter of a conversation or discussion; "he didn't want to discuss that subject"; "it was a very sensitive topic"; "his letters were always on the theme of love"
• 会話または議論の主題