This is the 7453rd most frequent Japanese word.
倶楽部
Club.
The word "倶楽部" is used to mean "club" or "association" in this context, referring to an organized group of people with common interests.
私はこの倶楽部に20年間所属しています。
I have been a member of this club for 20 years.
Here, "倶楽部" specifies a particular type of club, in this case related to photography, where people gather to share and enjoy the common interest in photography.
彼女は写真倶楽部の会員です。
She is a member of the photography club.
In this sentence, "倶楽部" again refers to an organized group, specifically focused on literature, often involving discussions, meetings, or activities centered around literary topics.