This is the 767th most frequent Polish word.
stowarzyszenie
"Stowarzyszenie" means "association" or "organization" in English.
In this sentence, 'stowarzyszenie' refers to an organized group of book enthusiasts.
Stowarzyszenie miłośników książek organizuje spotkanie.
The book lovers' association is organizing a meeting.
Here, 'stowarzyszenie' refers to a formal organization created to support local endeavors.
Nowo powstałe stowarzyszenie wspiera lokalne inicjatywy.
The newly formed association supports local initiatives.
In this case, 'stowarzyszenie' denotes an entity you can be part of to assist community efforts.