Durations rhymes with:
administration's, administrations, administrations', arbitrations, castrations, celebrations, concentrations, consecrations, demonstrations, desecrations, emigrations, frustrations, gyrations, illustrations, integrations, migrations, ministrations, orations, orchestrations, registrations, vibrations
Durations sounds like:
darden's, darting, deriding, deterding, deteriorating, drawdowns, drayton's, dreading