addict vs addiction

addict and addiction both are nouns.

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

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

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