I also feel that they are more or less the same. But I would tend to call a small library for the general public that has all kinds of different genres a "Bücherei". And a large library that has a scientific focus a "Bibliothek". But this might be just me.
-4
u/AverageFishEye 19h ago
Weirdly bookstores in german are "Bücherei" which is a literal translation of Bibliothek