Other forms: rivalries
Rivalry is competition between people after the same thing. Sibling rivalry, a fierce rivalry, an old rivalry.
It needs two sides who care, which is what separates a rivalry from mere competition: nobody has a rivalry with somebody they do not think about. Sibling rivalry is the term psychologists use for competition between children in a family.
1nounrivalryCompetition between people after the same thing.
“There's a fierce rivalry between the two football clubs in the city.”
rivalry is a competition.
From rival + -ry.
Etymology from Wiktionary, CC BY-SA