Definition of rivalry:
dogfight, confrontation, contestation, contest, corrivalry, battle, scramble, contender, grapple, duel, match, conflict, warfare, race, competition, disceptation, rival, competitor, striving, struggle, emulation, vying, ball game, contention, tilt, opposition, controversy, argument, aspiration, sweepstakes, combat, ambition, struggle, challenger, tug of war, battle, free-for-all, striving, face-off, fight, war, disputation, strife, arguing, dispute.
jealousy (part of speech: noun)
- "Daisy in the Field", Elizabeth Wetherell.
- "Project Gutenberg History of The Netherlands, 1555-1623, Complete", John Lothrop Motley.
- "The American Empire", Scott Nearing.