ataractic vs tranquilliser

ataractic and tranquilliser both are nouns.

Word	Noun	Adjective	Verb	Adverb
ataractic	Yes	Yes	No	No
tranquilliser	Yes	No	No	No

As nouns, ataractic and tranquilliser are synonyms defined as:

ataractic and tranquilliser: a drug used to reduce stress or tension without reducing mental clarity

Other synonyms of ataractic include antianxiety agent, ataractic agent, ataractic drug, tranquilizer, tranquillizer.

ataractic (noun)	tranquilliser (noun)
a drug used to reduce stress or tension without reducing mental clarity	a drug used to reduce stress or tension without reducing mental clarity

ataractic (adjective)	tranquilliser (adjective)
tending to soothe or tranquilize