This is the 3001st most frequent Russian word.
доступны
Available; accessible.
The word 'доступны' here means 'available' and indicates that the books can be accessed or acquired by anyone.
Эти книги доступны каждому.
These books are available to everyone.
In this sentence, 'доступны' is used to mean 'available' in terms of being reachable or within communication scope.
Будьте доступны в течение дня для связи.
Be available during the day for communication.
Here, 'доступны' refers to 'available' meaning that certain functions are enabled or provided under specific conditions.