Seidlitz powder vs Seidlitz powders

Seidlitz powder and Seidlitz powders both are nouns.

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

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

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

Other synonyms of Seidlitz powder include Rochelle powder.

Seidlitz 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