This is the 8140th most frequent Japanese word.
小清水
"小清水" (Koshimizu) is a Japanese surname or can refer to a place name in Japan.
In this sentence, "小清水" refers to the name of a village.
小清水村は山に囲まれています。
Koshimizu village is surrounded by mountains.
Here, "小清水" is used metaphorically, possibly referring to clear water or a refreshing place.
彼は小清水のような爽やかな人です。
He is a refreshing person like Koshimizu.
Here, "小清水" is used as a person's surname.