edema vs dropsy

edema and dropsy both are nouns.

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

As nouns, edema and dropsy are synonyms defined as:

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

Other synonyms of edema include hydrops, oedema.

edema (noun)	dropsy (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