laudanum vs tincture of opium

laudanum and tincture of opium both are nouns.

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

As nouns, laudanum and tincture of opium are synonyms defined as:

laudanum and tincture of opium: narcotic consisting of an alcohol solution of opium or any preparation in which opium is the main ingredient

laudanum (noun)	tincture of opium (noun)
narcotic consisting of an alcohol solution of opium or any preparation in which opium is the main ingredient	narcotic consisting of an alcohol solution of opium or any preparation in which opium is the main ingredient