addiction vs addict

addiction and addict both are nouns.

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

addiction (noun)	addict (noun)
(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	someone who is physiologically dependent on a substance or activity
an abnormally strong craving	someone who is so ardently devoted to something that it resembles an addiction
being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)

addiction (verb)	addict (verb)
	to cause (someone or oneself) to become dependent (on something, especially a narcotic drug)