psychodelic drug vs hallucinogenic drug

psychodelic drug and hallucinogenic drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
psychodelic drug	Yes	No	No	No
hallucinogenic drug	Yes	No	No	No

As nouns, psychodelic drug and hallucinogenic drug are synonyms defined as:

psychodelic drug and hallucinogenic drug: a psychoactive drug that induces hallucinations or altered sensory experiences

Other synonyms of psychodelic drug include hallucinogen, psychedelic drug.

psychodelic drug (noun)	hallucinogenic drug (noun)
a psychoactive drug that induces hallucinations or altered sensory experiences	a psychoactive drug that induces hallucinations or altered sensory experiences