Seidlitz powders vs Rochelle powder

Seidlitz powders and Rochelle powder both are nouns.

Word	Noun	Adjective	Verb	Adverb
Seidlitz powders	Yes	No	No	No
Rochelle powder	Yes	No	No	No

As nouns, Seidlitz powders and Rochelle powder are synonyms defined as:

Seidlitz powders and Rochelle powder: an effervescing salt containing sodium bicarbonate and Rochelle salt and tartaric acid; used as a cathartic

Other synonyms of Seidlitz powders include Seidlitz powder.

Seidlitz powders (noun)	Rochelle powder (noun)
an effervescing salt containing sodium bicarbonate and Rochelle salt and tartaric acid; used as a cathartic	an effervescing salt containing sodium bicarbonate and Rochelle salt and tartaric acid; used as a cathartic