失敗 - 負けるか勝つか

a situation where there is an equal chance for one to fail or succeed

to fight or compete with someone with great force, determination, and strength

to try harder in order not to let others outdo one

to be challenged by someone as equally good or slightly better than one

to agree to undertake a challenge

to challenge someone to a fight or competition

used to demonstrate confidence in one's skills and abilities when challenging someone

the circumstances or conditions under which competition takes place

a situation in which one side can achieve victory by taking the advantage away from the other side in a competition, causing them to lose the game

(in business, politics, etc.) a situation in which the competition is so fierce that everyone is willing to do whatever it takes to be successful, even if it means harming others