dolour vs brokenheartedness

dolour and brokenheartedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
dolour	Yes	No	No	No
brokenheartedness	Yes	No	No	No

As nouns, brokenheartedness is a hypernym of dolour; that is, brokenheartedness is a word with a broader meaning than dolour:

dolour: (poetry) painful grief
brokenheartedness: intense sorrow caused by loss of a loved one (especially by death)

Other hypernyms of dolour include grief, heartache, heartbreak.

dolour (noun)	brokenheartedness (noun)
(poetry) painful grief	intense sorrow caused by loss of a loved one (especially by death)