hemorrhagic stroke vs apoplexy

hemorrhagic stroke and apoplexy both are nouns.

Word	Noun	Adjective	Verb	Adverb
hemorrhagic stroke	Yes	No	No	No
apoplexy	Yes	No	No	No

As nouns, apoplexy is a hypernym of hemorrhagic stroke; that is, apoplexy is a word with a broader meaning than hemorrhagic stroke:

hemorrhagic stroke: stroke caused by the rupture of a blood vessel in the brain
apoplexy: a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain

Other hypernyms of hemorrhagic stroke include cerebrovascular accident, CVA, stroke, bleeding, haemorrhage, hemorrhage.

hemorrhagic stroke (noun)	apoplexy (noun)
stroke caused by the rupture of a blood vessel in the brain	a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain