chemosis vs hydrops

chemosis and hydrops both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemosis	Yes	No	No	No
hydrops	Yes	No	No	No

As nouns, hydrops is a hypernym of chemosis; that is, hydrops is a word with a broader meaning than chemosis:

chemosis: edema of the mucous membrane of the eyeball and eyelid lining
hydrops: swelling from excessive accumulation of watery fluid in cells, tissues, or serous cavities

Other hypernyms of chemosis include dropsy, edema, oedema.

chemosis (noun)	hydrops (noun)
edema of the mucous membrane of the eyeball and eyelid lining	swelling from excessive accumulation of watery fluid in cells, tissues, or serous cavities