A friendcenary, sometimes known as a friend of a friend, is an individual who is friends with a group of people but is only a known by one person of the group, is otherwise an outsider of the group, and is not an official friend of anyone.

Friendcenaries are seen in parties or when your friend brings their friend you don't know, their payment is usually just socializing because otherwise they are often outcasts.

A cryptocurrency of little to no value, usually a late-comer to the Bitcoin craze, a copycat cryptocurrency.