Common of Saints
The Masses or Collects, Secrets, and Post-communions in the Missal and the Offices in the Breviary for apostles, martyrs , confessors, virgins, and holy women, and for all the saints and the blessed for whom there is not a proper office.
Fuente: New Catholic Dictionary
Common of Saints
is a festal service in honor of a particular kind or class of saints, e.g. a martyr, a virgin, or confessor; suitable, consequently, for any festival commemorating one of the class in which the name of the saint commemorated is introduced in the collect and at the other appointed places.