Hallucinogenic drug and Phencyclidine

Hallucinogenic drug noun - A psychoactive drug that induces hallucinations or altered sensory experiences.

Phencyclidine and hallucinogenic drug are semantically related. In some cases you can replace term "Phencyclidine" with "Hallucinogenic drug", this terms are similar.

Phencyclidine noun - A drug used as an anesthetic by veterinarians; illicitly taken (originally in the form of powder or `dust') for its effects as a hallucinogen.

Hallucinogenic drug and phencyclidine are semantically related. You can use "Hallucinogenic drug" instead a noun "Phencyclidine".