Seidlitz powders vs physic

Seidlitz powders and physic both are nouns.

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

As nouns, physic is a hypernym of Seidlitz powders; that is, physic is a word with a broader meaning than Seidlitz powders:

Seidlitz powders: an effervescing salt containing sodium bicarbonate and Rochelle salt and tartaric acid; used as a cathartic
physic: a purging medicine; stimulates evacuation of the bowels

Other hypernyms of Seidlitz powders include aperient, cathartic, purgative.

Seidlitz powders (noun)	physic (noun)
an effervescing salt containing sodium bicarbonate and Rochelle salt and tartaric acid; used as a cathartic	a purging medicine; stimulates evacuation of the bowels