Expedience rhymes with:
disobedience, obedience, audience, disobedience, obedience, radiance, ambiance, ambience, audience, dalliance, deviance, disobedience, experience, inexperience, insouciance, invariance, obedience, prescience, provenience, radiance, resilience, subservience, transience, variance
Expedience sounds like:
egyptians, excavating, excavations, excepting, exceptions, exhibiting, exhibitions, expediency, expediting, expeditions