The Japanese noun '章 (しょう)' primarily means 'chapter'. It is used to refer to a main division of a book, typically with a number or title. This term is commonly found in academic texts, novels, and other written works. For example: Please read chapter three「第三章を読んでください」(だいさんしょうをよんでください). The final chapter was very interesting「最終章はとても面白かった」(さいしゅうしょうはとてもおもしろかった). Additionally, '章' can sometimes be used metaphorically to describe a phase or period in life or history, though this usage is less common.