Other forms: memberships
Use the noun membership to describe the people who together make up a group or organization. Your secret childhood club may have had a membership consisting only of you, your brother, and your best friend.
Any official group has a membership, the people who belong to it. Your high school French club has a membership, and so does the United States Congress. You can also use the word to mean "the fact of being a member," like when you brag about your membership in Mensa, the organization for people with extremely high intelligence. The root of membership is the Latin word for body part or limb, membrum.
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