Hallucinogenic drug and Psychoactive substance

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

Psychoactive substance and hallucinogenic drug are semantically related. In some cases you can use "Psychoactive substance" instead a noun phrase "Hallucinogenic drug".

Psychoactive substance noun - A drug that can produce mood changes and distorted perceptions.

Hallucinogenic drug and psychoactive substance are semantically related. Sometimes you can replace phrase "Hallucinogenic drug" with "Psychoactive substance", this phrases are similar.