In "The Devil and Tom Walker" how is "stereotype" used as a literary device in this story?

Tom as greedy:

"He had a wife as miserly as himself; they were so miserly that they even conspired to cheat each other."

He built himself, as usual, a vast house, out of ostentation; but left the greater part of it unfinished and unfurnished, out of parsimony. He even set up a carriage in the fullness of his vainglory, though he nearly starved the horses which drew it; and as the ungreased wheels groaned and screeched on the axle-trees, you would have thought you heard the souls of the poor debtors he was squeezing.