General terms:
* End - This is the most straightforward and general term.
* Conclusion - This implies that the book is wrapping up its main ideas or themes.
* Epilogue - This is a short section that comes after the main story, often offering a glimpse into the characters' future or providing some additional insight.
* Afterword - This is a section written by someone other than the author, often providing commentary or analysis on the book.
More specific terms:
* Final chapter - This is a more specific term used when referring to the last chapter of a novel or other book with chapters.
* Coda - This term is often used in music and literature to refer to a concluding section that is separate from the main body of work.
The best term to use will depend on the specific book and the context in which you are using it.