This is the 5477th most frequent Catalan word.
congreguen
"Congreguen" means "they gather" or "they congregate" in English.
Here, 'congreguen' is used in a natural context implying a group of birds gathering together at one location.
Els ocells congreguen al parc durant l'hivern.
The birds gather at the park during the winter.
In this sentence, 'congreguen' describes people meeting at a sacred place for a religious purpose.
Els fidels congreguen a l'església per la missa dominical.
The faithful gather at the church for the Sunday mass.
This usage illustrates 'congreguen' in the educational domain where individuals come together for academic activities.