Final answer:
Tom Walker and his wife are characterized by their greed and miserliness, Tom makes a deal with the Devil for wealth, and attempts to escape the deal through usury and false piety.
Step-by-step explanation:
The character traits that Tom Walker and his wife share are greed and miserliness. The bargain Tom makes is with the Devil, whom he meets in the forest, and he agrees to a deal for wealth in exchange for his soul. To avoid fulfilling his end of the bargain, Tom tries to outsmart the Devil by engaging in usury and becoming a devout churchgoer, hoping that these actions will protect him from the Devil's claim.