heartache vs brokenheartedness

heartache and brokenheartedness both are nouns.

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

As nouns, heartache and brokenheartedness are synonyms defined as:

heartache and brokenheartedness: intense sorrow caused by loss of a loved one (especially by death)

Other synonyms of heartache include grief, heartbreak.

heartache (noun)	brokenheartedness (noun)
intense sorrow caused by loss of a loved one (especially by death)	intense sorrow caused by loss of a loved one (especially by death)