This is the 11205th most frequent Polish word.
gronu
"Gronu" is the dative or locative form of "grono," which means "a cluster" or "a group" (e.g., of people or things).
Here, 'w gronie' is used to denote 'in the company of', indicating a group of friends.
W gronie przyjaciół czuję się swobodnie.
In the company of friends, I feel at ease.
In this sentence, 'grono' refers to a 'group' or 'circle', specifically professionals or specialists.
To grono ekspertów zna odpowiedź na każde pytanie.
This group of experts knows the answer to every question.
The word 'gronie' (locative case of 'grono') is used to describe a close-knit community or circle in which something is shared or conducted.