heroin vs diacetylmorphine

heroin and diacetylmorphine both are nouns.

Word	Noun	Adjective	Verb	Adverb
heroin	Yes	No	No	No
diacetylmorphine	Yes	No	No	No

As nouns, heroin and diacetylmorphine are synonyms defined as:

heroin and diacetylmorphine: a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush

heroin (noun)	diacetylmorphine (noun)
a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush	a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush