dirge vs threnody

dirge and threnody both are nouns.

Word	Noun	Adjective	Verb	Adverb
dirge	Yes	No	No	No
threnody	Yes	No	No	No

As nouns, dirge and threnody are synonyms defined as:

dirge and threnody: a song or hymn of mourning composed or performed as a memorial to a dead person

Other synonyms of dirge include coronach, lament, requiem.

dirge (noun)	threnody (noun)
a song or hymn of mourning composed or performed as a memorial to a dead person	a song or hymn of mourning composed or performed as a memorial to a dead person