- dirge, coronach, lament, requiem, threnody - a song or hymn of mourning composed or performed as a memorial to a dead person
--1 is a kind of song
--1 has particulars: keen - Requiem - a musical setting for a Mass celebrating the dead
--2 is a kind of Mass
--2 is a part of Requiem- Requiem - a Mass celebrated for the dead
--3 is a kind of Mass
--3 has part: Requiem - Requiem - a Mass celebrated for the dead