The tooth socket is also called “alveolus” and it refers to the cavity in the jaw in which the roots of the teeth are held.
The part of the jaw where the tooth sockets are located is the alveolar process (also called alveolar bone). There are tooth sockets in the upper and lower jaw. Together with the gums, the dental cementum and the periodontal ligament, the alveolus is part of the periodontium.