Ascendance rhymes with:
transcendence, attendance, dependence, independence, interdependence, transcendence, abundance, attendance, correspondence, dependence, independence, interdependence, overabundance, overdependence, transcendence
Ascendance sounds like:
accenting, accentuating, accommodating, accommodations, accountancy, accounting, acquaintance, acquaintances, ascendancy, ascendency, ascending, assassinating, assassinations, augmenting