What do you call a book that is in your hand?

I am trying to find words to describe two distinct entities related to books, but I guess I am struggling because English is not my native language.

What do you call the concrete entity of a book, e.g., a book that I have in my hands vs. the conceptual entity of a book, e.g., the one that a publisher has in their catalog?

For example, in Portuguese we could call the conceptual book a "livro" and the physical entity an "exemplar" of this "livro".

I think I could call them "Book" and "Book copy" but it is not very satisfying, are there better words to describe those two entities?

Solution 1:

The equivalent to your exemplar is copy, as Hachi says. Book is used of the conceptual entity and, in everyday conversation, of the physical item too. Isn't that the same in Portuguese? I know it is in French.

I'm a retired librarian, and we would order so many copies of a particular title from our book suppliers.

Solution 2:

I think "a copy" or "a copy of [title]" is the best you are going to get. If you went to the bookstore and asked to buy The Odyssey, it would be completely proper and expected to hear "let's see if we have a copy in stock".

I don't think you would hear someone say "let's see if we have a book copy".