This is the 3068th most frequent Korean word.
효력
Effect or efficacy.
In this scenario, '효력' indicates the groundwork or application power of the law as it begins to officially influence or come into effect.
새로운 법률이 곧 효력을 발휘할 예정입니다.
The new law will soon take effect.
The term '효력' is used to describe the effectiveness or the active power of something, in this case, the medicine's ability to produce desired results.
이 약은 강한 효력을 가지고 있습니다.
This medicine has strong efficacy.
Here, '효력' refers to the validity or enforceability of the contract, stating its legal power is no longer active due to expiration.