Rochelle powder vs Seidlitz powders

Rochelle powder and Seidlitz powders both are nouns.

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

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

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

Other synonyms of Rochelle powder include Seidlitz powder.

Rochelle powder (noun)	Seidlitz powders (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