* DesignatedHero - Jack.
* DesignatedVillain - The giant.
* FamilyUnfriendlyAesop - The moral of the story seems to be that you should totally give away something that has a lot of worth for something that seems worthless, because it'll always pay off by giving you immense wealth.
** Or that stealing is the way forward.
* MemeticMutation - "To kill the goose that lays the golden eggs".