Prudence
Part of speech: noun
Definition: The quality or state of being prudent; wisdom in the way of caution and provision; discretion; carefulness; hence, also, economy; frugality.
Example sentence: For those of us learning the way to financial serenity and solvency, the envelope system teaches prudence, patience, and perseverance. You can only spend what you have.
Discretion
Part of speech: noun
Definition: The quality of being discreet or circumspectThe ability to make wise choices or decisionsThe freedom to make one's own judgements
Example sentence: We schoolmasters must temper discretion with deceit.