diacetylmorphine vs heroin

diacetylmorphine and heroin both are nouns.

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

As nouns, diacetylmorphine and heroin are synonyms defined as:

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

diacetylmorphine (noun)	heroin (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