This is the 7652nd most frequent Japanese word.
包帯
Bandage.
包帯 is used here to indicate a physical bandage applied to an injury.
彼は怪我をして、腕に包帯を巻きました。
He got injured and wrapped a bandage around his arm.
包帯 refers to the bandage itself in the context of discussing its application.
あなたは包帯の巻き方を知っていますか？
Do you know how to apply a bandage?
包帯 in this sentence refers to bandages in general terms and emphasizes care practices.