Psychedelic drug and Psychoactive drug

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

Psychoactive drug and psychedelic drug are semantically related. In some cases you can use "Psychoactive drug" instead a noun phrase "Psychedelic drug".

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

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