Seidlitz powder vs physic

Seidlitz powder and physic both are nouns.

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

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

Seidlitz powder: 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 powder include aperient, cathartic, purgative.

Seidlitz powder (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