Discretion rhymes with:
indiscretion, indiscretion, indiscretion, indiscretion, aggression, compression, decompression, depression, digression, expression, freshen, impression, indiscretion, misimpression, nonaggression, oppression, progression, regression, repression, suppression, transgression
Discretion sounds like:
decoration, degradation, desecration, desertion, desjardin, dissertation