This is the 11047th most frequent Korean word.
기관지염
Bronchitis.
In this sentence, '기관지염' (bronchitis) is used to describe a medical condition that the subject is afflicted with.
그는 기관지염에 걸려서 쉬고 있습니다.
He is resting because he has bronchitis.
Here, '기관지염' indicates a condition requiring general concern, modifying its usage to a topic of advice.
기관지염은 겨울철에 더욱 주의해야 합니다.
Bronchitis requires more attention during the winter season.
In this case, '기관지염' represents a recurring ailment experienced by a specific individual.