noun
last chapter; final chapter
Refers to the concluding chapter of a book, story, or similar work.
この小説の最終章は感動的だ。
The last chapter of this novel is moving.
最終回 is used for the final episode of a TV series, radio program, or serialized work, while 最終章 is for the last chapter of a book or written work.
Compound of 最終 (final, last) and 章 (chapter).