Ten years ago, when you referred to cannabis, you were talking about dried plant material that people smoked,” says Ryan Vandrey, associate professor of psychiatry and behavioral sciences at the Johns Hopkins School of Medicine.

“Now, cannabis — which refers to marijuana and hemp — is a blanket term that could also mean hemp oil, topical creams, CBD products, high-THC concentrates that are smoked, vaporized or orally ingested and more.”

And confusion abounds.