water pill vs diuretic

water pill and diuretic both are nouns.

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

As nouns, water pill and diuretic are synonyms defined as:

water pill and diuretic: any substance that tends to increase the flow of urine, which causes the body to get rid of excess water

Other synonyms of water pill include diuretic drug.

water pill (noun)	diuretic (noun)
any substance that tends to increase the flow of urine, which causes the body to get rid of excess water	any substance that tends to increase the flow of urine, which causes the body to get rid of excess water