A. discretion: Ability to discern or distinguish what is right, befitting, or advisable, esp. as regards one's own conduct or action; the quality of being discreet; discernment; prudence, sagacity, circumspection, sound judgement.
B. discreet: Showing discernment or judgement in the guidance of one's own speech and action; judicious, prudent, circumspect, cautious; often esp. that can be silent when speech would be inconvenient.
C. discernment: a. The act of discerning or perceivi...