In "The Devil and Tom Walker," how are Tom and his wife alike?

I am sorry--even though this appears as one question in
your book, it is clearly more than one and so I have had to edit it accordingly. It is
clear that Tom and his wife are very suitable partners for each other. Note how they are
introduced in the text as being similar in a number of key
ways:

He had
a wife as misery as himself: They were so miserly that they even conspired to cheat each
other. Whatever the woman could lay hands on, she hid away; a hen could not cackle but
she was on the alert to secure the new-laid egg. Her husband was continually prying
about to detect her secret hoards, and many and fierce were the conflicts that took
place about what ought to have been common
property.

The defining
characteristic of both of them seems to be their miserliness and their avaricious
nature. Note the element of irony in this description - so misery are they that they
even argue and fight with each other over their possessions, that ought to have been
held in common.