rivalry
🇺🇸
/ˈraɪvlri/
🇬🇧
/ˈraɪvlri/
competition between two or more people or groups who want the same thing
The rivalry between the two companies made them both work harder to improve their products.
二つの会社間の競争が、両社とも製品改善に一層努力するきっかけとなった。