tincture of opium vs opiate

tincture of opium and opiate both are nouns.

Word	Noun	Adjective	Verb	Adverb
tincture of opium	Yes	No	No	No
opiate	Yes	No	No	No

As nouns, opiate is a hypernym of tincture of opium; that is, opiate is a word with a broader meaning than tincture of opium:

tincture of opium: narcotic consisting of an alcohol solution of opium or any preparation in which opium is the main ingredient
opiate: a narcotic drug that contains opium or an opium derivative

tincture of opium (noun)	opiate (noun)
narcotic consisting of an alcohol solution of opium or any preparation in which opium is the main ingredient	a narcotic drug that contains opium or an opium derivative