As nouns the difference between flyleaf and endpaper
is that flyleaf is a blank page at the front or back of a book while endpaper is either of two folded sheets of paper used to connect the front and back covers of a book to the first and last pages.
flyleaf
English
Noun
(flyleaves)
A blank page at the front or back of a book.
endpaper
English
Noun
(
en noun)
Either of two folded sheets of paper used to connect the front and back covers of a book to the first and last pages