Question: I have been scouring the internet for a few days and have not been able to find what I am looking for, so I decided to come here and ask you fine people if you have an answer to my line of inquiry. 

I have been looking for what a group of books is called and why it is named so, id est, the type of series that it is and why it is called that. 

For example, chronicles are multiple pieces of literature that take place in the same place or involve the same character(s). Words like chronicle and saga are examples of what I am looking for.

Answer: 
Consider [**library of books**](http://www.merriam-webster.com/dictionary/library).

> 
> **library**: 
> 
> 
> 

1.

> 
> **a**: a place in which literary, musical, artistic, or reference materials (as books, manuscripts, recordings, or films, are kept for use but not for sale
> 
> 
> **b**: a collection of such material
> 
> 
> 

2.

> 
> a collection resembling or suggesting a library
> 
> 
> 

3.

> 
> **a**: a series of related books issued by a publisher
> 
> 
> **b**: a collection of publications on the same subject
> 
> 
>
One might say "a [**series**](http://dictionary.reference.com/browse/series) of books", or just "a series".

> 
> **series**:
> 
> 
> a set of books, articles, etc., that involve the same group of characters or the same subject
> 
> 
>