Edecrin vs water pill

Edecrin and water pill both are nouns.

Word	Noun	Adjective	Verb	Adverb
Edecrin	Yes	No	No	No
water pill	Yes	No	No	No

As nouns, water pill is a hypernym of Edecrin; that is, water pill is a word with a broader meaning than Edecrin:

Edecrin: diuretic (trade name Edecrin) used to treat edema
water pill: any substance that tends to increase the flow of urine, which causes the body to get rid of excess water

Other hypernyms of Edecrin include diuretic, diuretic drug.

Edecrin (noun)	water pill (noun)
diuretic (trade name Edecrin) used to treat edema	any substance that tends to increase the flow of urine, which causes the body to get rid of excess water