hypnotic vs narcoleptic

hypnotic and narcoleptic both are nouns.

Word	Noun	Adjective	Verb	Adverb
hypnotic	Yes	Yes	No	No
narcoleptic	Yes	Yes	No	No

As nouns, narcoleptic is a hyponym of hypnotic; that is, narcoleptic is a word with a more specific, narrower meaning than hypnotic:

hypnotic: a drug that induces sleep
narcoleptic: a soporific drug that produces an uncontrollable desire to sleep

Other hyponyms of hypnotic include sleeping capsule, sleeping draught, sleeping pill, sleeping tablet.

hypnotic (noun)	narcoleptic (noun)
a drug that induces sleep	a soporific drug that produces an uncontrollable desire to sleep
	a person who has narcolepsy

hypnotic (adjective)	narcoleptic (adjective)
of or relating to hypnosis	of or relating to narcolepsy
attracting and holding interest as if by a spell