This is the 7524th most frequent Japanese word.
共済
Mutual aid or cooperative insurance.
Here, 『共済制度』 represents a mutual aid program or system established to support a specific group, indicating the organized and systematic aspect of mutual assistance.
この地域では、農業従事者向けの共済制度があります。
In this area, there is a mutual aid system for agricultural workers.
In this sentence, 『共済会』 refers to a mutual aid association, highlighting the communal aspect and organizational structure to collaboratively provide support amongst its members.
彼は共済会に加入しました。
He joined the mutual aid association.
The term 『共済保険』 emphasizes the insurance provided through mutual aid arrangements, specifically focused on covering medical costs, illustrating the applied scope toward health-related assistance.