addiction vs craving

addiction and craving both are nouns.

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

As nouns, craving is a hypernym of addiction; that is, craving is a word with a broader meaning than addiction:

addiction (noun)	craving (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	an intense desire for some particular thing
an abnormally strong craving
being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)