A series.
A big group of books is called a library.I call a group of books a group of books.
A libraryA book group
Stack
A library.
a series
a series
There is no group called the Illuminati. It is made up for fiction and a books.
if you are talking about a number of books thay are referd to being called a saga but if you are bying books of the internet thay are just called box sets also if you are refering to a book of storys then thay are called short stories books
The extra group of books are called the Apocrypha or deuterocanonical by Catholics. These "extra" Old Testament books include Tobit, Judith, Maccabees, Sirach, and several others.
buddyas
A group or series of five books is a quintet.
Perseus Books Group was created in 1996.