Freeburn rhymes with:
arterburn, bradburn, camburn, clayburn, cockburn, cogburn, eastburn, fairburn, fishburn, glassburn, heartburn, kinburn, marshburn, mashburn, milburn, newburn, osburn, pangburn, redburn, sunburn, washburn, washburne, winburn, woodburn
Freeburn sounds like:
fairbairn, fairburn, feuerborn, forebrain, freeborn, freeform