Slightly off topic but did anyone else find it weird/funny that in the first graph showing total listings by drug, alongside more "official" names for substance

Slightly off topic but did anyone else find it weird/funny that in the first graph showing total listings by drug, alongside more "official" names for substances like MDMA, LSD, and amphetamine, they listed "weed"? I mean...I understand using common terms that have become de facto names (like "marijuana" instead of "cannabis") but "weed"? That's like making a list with Morphine, Oxycodone, PCP, and Blow. I dunno...maybe it just tickled my "one of these things is not like the other" sense since the list wasn't all slang terms but rather more accepted labels with a single street/slang name.