requiem vs threnody

requiem and threnody both are nouns.

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

As nouns, requiem and threnody are synonyms defined as:

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

Other synonyms of requiem include coronach, dirge, lament.

requiem (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