This is the 7825th most frequent Chinese word.
院墙
Courtyard wall.
Here, '院墙' is used in its primary meaning as 'courtyard wall' to describe a physical boundary structure.
院墙很高，围住了整个庭院。
The courtyard wall is very tall, enclosing the whole yard.
In this sentence, '院墙' refers to its locational aspect, indicating the location of the children's activities relative to the physical wall.
孩子们在院墙外玩耍。
The children are playing outside the courtyard wall.
This usage highlights '院墙' as a noun in a possessive structure, indicating the vines are specifically on the courtyard wall.