Consciousness-altering drug and Hallucinogenic drug

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

Hallucinogenic drug and consciousness-altering drug are semantically related. In some cases you can replace phrase "Hallucinogenic drug" with "Consciousness-altering drug", this phrases are similar.

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

Consciousness-altering drug and hallucinogenic drug are semantically related. You can use "Consciousness-altering drug" instead a noun phrase "Hallucinogenic drug".