To join parts into one keepable whole — pages into a book, tracks into an album. Combination that produces an object.
Old English bindan, from Proto-Germanic *bindan, from a Proto-Indo-European root for tying together; the same ancient root gives 'band,' 'bond,' and 'bundle.'
To join loose parts into a single keepable whole — the act that turns a stack of pages into a book, or a set of tracks into an album.