This is the 4514th most frequent Japanese word.
小坂
"小坂" (Kosaka) typically refers to a "small slope" or "small hill" and can also be used as a Japanese surname or place name.
In this context, '小坂' is used as a proper noun referring to a geographical location (Kosaka).
彼は小坂に住んでいます。
He lives in Kosaka.
Here, '小坂' is interpreted as a common noun meaning 'small slope'.
この道を登ると小坂があります。
If you go up this road, there is a small slope.
The term '小坂' is part of a proper noun here, likely the title of a film or a specific name.