The '''Hymns of Contrition''' may also be called the '''[[Penitential Hymns]]''' <ref>The ''Penitential Hymns'' should not be confused with Catholic church refers to the ''[[Penitential Psalms]]''as ''Penitential Hymns''; in the Eastern Orthodox church these two terms should not be confused.</ref> and known by from the Greek, using standard Latinisation from the Greek , as ''Katanyktikoi Hymnoi''. The term refers to a wide set of pieces of hymnography used throughout the period of the [[Triodion]], most especially in the stichera of Lenten Vespers (most often referenced in Sunday night Vespers). <ref>Definition provided by [[User:ASDamick]]</ref>