edema vs hydrops

edema and hydrops both are nouns.

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

As nouns, edema and hydrops are synonyms defined as:

edema and hydrops: swelling from excessive accumulation of watery fluid in cells, tissues, or serous cavities

Other synonyms of edema include dropsy, oedema.

edema (noun)	hydrops (noun)
swelling from excessive accumulation of watery fluid in cells, tissues, or serous cavities	swelling from excessive accumulation of watery fluid in cells, tissues, or serous cavities