Are two completly different and sometimes overlaping hobbies.
I used to buy books like I used to buy PlayStation 2 games. Every saturday I used to buy 2 or 3 games, it reached a point where I had over 300 games but played the same 10 at most.
Like wise with books, I used to buy whatever grabbed my attention and I have a library full of books I have zero intention to read.
When I got my first Kindle back in 2011, the physical book lost its shine for me, it was now about reading the book and I became more serious about what books to buy. Not buying anything that seemed even a little bit interesting, I had to start to think about what I was really going to enjoy.
For me buying books and reading them are two different things.
https://en.m.wikipedia.org/wiki/Tsundoku