Types of Hymns in the Orthodox Church
According to Byzantine tradition
1) The First Antiphon = "Through the Intercessions"
2) The Second Antiphon = "Save Us, O Son of God"
3) The Hymn of Justinian = "Only Begotten Son"
4) Apolytikion/Troparion = Resurrectional hymn of the day, hymn dedicated to a specific church, or a hymn dedicated to a specific saint/Feast Day of the Church
5) Kontakion = 'Seasonal' hymn of a Feast
5) Trisagion = The Thrice-Holy Hymn
6) Megalynarion = Magnificat Hymn