hyperidrosis vs diaphoresis

hyperidrosis and diaphoresis both are nouns.

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

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

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

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

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