This is the 18208th most frequent Korean word.
순환
Circulation or cycle.
The word '순환' is used here to mean 'cycle' in the context of natural processes.
자연의 순환은 생명체에게 중요한 역할을 합니다.
The cycle of nature plays an important role for living beings.
In this sentence, '순환' refers to 'circulation,' specifically blood circulation.
혈액 순환이 원활해야 건강을 유지할 수 있습니다.
Healthy blood circulation is essential for maintaining good health.
Here, '순환' is used metaphorically to describe the circulation or flow in an economy.