To reiterate what I've taught and been taught, when you are binding books you generally need a thread that will not stretch or break
Types of Bookbinding: Glue-Free Techniques - Indigo Craft Room
Book Arts and Photography » What type of thread is best for binding my book?
Thread for Bookbinding and More
150+ Thread Book Binding Stock Photos, Pictures & Royalty-Free Images - iStock
DIY Bookbinding: Make a sketchbook with a cereal box, paper, and thread
6″ Anselm Bookbinding Kit – Peg and Awl
Leather Sewing Waxed Thread Sewing Tools Accessory - 300m Thread Leather Sewing - Aliexpress
A Guide To The Types Of Bookbinding, Handy Design Tips
Bookbinding with Paper, Thread, and Tape - Center for Book Arts
Stitching method to hide thread in the middle of open signature : r/ bookbinding
Linen Thread: Green
Thread, Bookbinding Material 101