The comprehensive version is called the Great Euchologion (Greek: Εὐχολόγιον τό μέγα, Euchológion to méga; Slavonic: Болшой Іерейскій Молитвословъ, Bolshói Ieréisky Molitvoslóv; Romanian: Arhieraticon), and contains the following:
- The parts for the priest and deacon at Vespers, Orthros (Matins), and the Divine Liturgy, together with supplementary material (Prokeimena, Calendar of Saints, etc.)
- The remaining Sacred Mysteries (sacraments), monastic tonsure, Blessing of Waters, etc. The texts for these and the following services are provided in full.
- Services performed by a bishop (ordination, consecration of a church)
- Various blessings and prayers for occasional use (Blessing of a House, Visitation of the Sick, and funerals)
- Services of supplication (Molebens)
- (For a full description of the contents and order of the Great Euchologion, see below, under Content)
The other books contain only portions of the Great Euchologion:
- The Priest's Service Book (Greek: Ἱερατικόν, Hieratikon; Slavonic: Слѹжебникъ, Sluzhébnik; Romanian: Liturghier) containing Vespers, Matins, Compline and Divine Liturgy, plus supplementary material.
- The Small Euchologion or Book of Needs (Greek: Ἁγιασματάριον, Hagiasmatárion; Μικρόν Εὐχολόγιον, Mikron Euchológion; Slavonic: Требникъ, Trébnik; Romanian: Molitfelnic) contains the mysteries (except liturgy) which would be used by a priest, as well as the other services that would be commonly called for in a parish.
- The Ritual or Pontifical (Greek: Ἀρχιιερατικόν, Archieratikon, Slavonic: Чиновникъ, Chinovnik; Romanian: Arhieraticon) contains the portions of Vespers, Matins, liturgy and the mysteries that are performed by a bishop.