Defections rhymes with:
affections, confections, imperfections, infections, affections, collections, complexions, confections, connections, corrections, directions, dissections, election's, elections, erections, imperfections, infections, inflections, injections, inspections, interconnections, interjections, intersections, objection's, objections, predilections, projections, protections, recollections, reflections, rejections, section's, sections, selections
Defections sounds like:
defecting, depicting, depictions, depositing, depositions, devastating, divesting