calomel vs mercurous chloride

calomel and mercurous chloride both are nouns.

Word	Noun	Adjective	Verb	Adverb
calomel	Yes	No	No	No
mercurous chloride	Yes	No	No	No

As nouns, calomel and mercurous chloride are synonyms defined as:

calomel and mercurous chloride: a tasteless colorless powder used medicinally as a cathartic

calomel (noun)	mercurous chloride (noun)
a tasteless colorless powder used medicinally as a cathartic	a tasteless colorless powder used medicinally as a cathartic