Majority's rhymes with:
authorities, minorities, priorities, sororities, authorities, charities, charity's, disparities, impurities, irregularities, minorities, parities, peculiarities, priorities, securities, securities', security's, similarities, solidarity's, sororities, unfamiliarities, verities, verity's
Majority's sounds like:
majorities, mccarthy's, megahertz, migrates, miniskirts, mozart's, muggeridge, muskrats