Definition: a handwritten or printed work consisting of pages glued or sewn together along one side and bound in covers.
As a noun, the movement of this sign is formally twice. However, the movement may be once in effect of phonological co-articulation even if it's noun in sentence.
Plural noun: books in a pile; a stack of books.
Gloss: /\YOUR BOOK/\ IX-me FINISH READ+++, [intj] VERY-GOOD[nod]
English equivalent: I've been reading your book. It's very good.
The intonation of the interjection (like "HEY") is a way of getting listener's attention. The gloss [nod] is an example of assertion.