This is the 2299th most frequent Korean word.
효과
Effect; efficacy.
The word '효과' is used here to denote the outcome or benefit of engaging in exercise. It represents results or impacts stemming from a particular action.
운동은 건강에 긍정적인 효과를 줍니다.
Exercise has positive effects on health.
In this sentence '효과' refers to the effectiveness or efficacy of the medicine in achieving the intended result, which is the treatment of colds.
이 약은 감기 치료에 효과가 있습니다.
This medicine is effective for treating colds.
Here '효과적인' is the adjective form derived from '효과', describing the attribute of being efficient or productive in the context of managing time.