Chapter 7-1: Confusion with library and binary

[dcts]

• I have checked the latest main branch to see if this has already been fixed
• I have searched existing issues and pull requests for duplicates

URL to the section(s) of the book with this problem:
In 7-1 it is stated that:

A crate is a binary or library (source)

But its never actually described what the difference or characterization of those two is? I know what a binary is, but what is a library in this context? Doesn't a library also contain a binary? This is getting really confusing, at least for me as beginner.

Opening this issue in case I am not alone confused by this. :)

[dcts]

I found this useful explenation:

Rust programs may contain a binary crate or a library crate. A binary crate is an executable project that has a main() method. A library crate is a group of components that can be reused in other projects. Unlike a binary crate, a library crate does not have an entry point (main() method)

taken from tutorialspoint.

It would be great to add this to the the rust-book somewhere, especially it may be usefull to beginners :)