narcotic vs addiction

narcotic and addiction both are nouns.

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

narcotic (noun)	addiction (noun)
a drug that produces numbness or stupor; often taken for pleasure or to reduce pain; extensive use can lead to addiction	(Roman law) a formal award by a magistrate of a thing or person to another person (as the award of a debtor to his creditor); a surrender to a master
	an abnormally strong craving
	being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)

narcotic (adjective)	addiction (adjective)
of or relating to or designating narcotics
inducing stupor or narcosis
inducing mental lethargy