hyperhidrosis vs diaphoresis

hyperhidrosis and diaphoresis both are nouns.

Word	Noun	Adjective	Verb	Adverb
hyperhidrosis	Yes	No	No	No
diaphoresis	Yes	No	No	No

As nouns, diaphoresis is a hypernym of hyperhidrosis; that is, diaphoresis is a word with a broader meaning than hyperhidrosis:

hyperhidrosis: excessive and profuse perspiration
diaphoresis: the process of the sweat glands of the skin secreting a salty fluid

Other hypernyms of hyperhidrosis include hidrosis, perspiration, sudation, sweating.

hyperhidrosis (noun)	diaphoresis (noun)
excessive and profuse perspiration	the process of the sweat glands of the skin secreting a salty fluid