HAART vs medicinal drug

HAART and medicinal drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
HAART	Yes	No	No	No
medicinal drug	Yes	No	No	No

As nouns, medicinal drug is a hypernym of HAART; that is, medicinal drug is a word with a broader meaning than HAART:

HAART: a combination of protease inhibitors taken with reverse transcriptase inhibitors; used in treating AIDS and HIV
medicinal drug: (medicine) something that treats or prevents or alleviates the symptoms of disease

Other hypernyms of HAART include medicament, medication, medicine.

HAART (noun)	medicinal drug (noun)
a combination of protease inhibitors taken with reverse transcriptase inhibitors; used in treating AIDS and HIV	(medicine) something that treats or prevents or alleviates the symptoms of disease