narcotic vs uninteresting

narcotic is a noun but uninteresting is not a noun.

Word	Noun	Adjective	Verb	Adverb
narcotic	Yes	Yes	No	No
uninteresting	No	Yes	No	No

narcotic (noun)	uninteresting (noun)
a drug that produces numbness or stupor; often taken for pleasure or to reduce pain; extensive use can lead to addiction

narcotic (adjective)	uninteresting (adjective)
of or relating to or designating narcotics	arousing no interest or attention or curiosity or excitement
inducing stupor or narcosis	characteristic or suggestive of an institution especially in being uniform or dull or unimaginative
inducing mental lethargy