This is the 17164th most frequent Russian word.
стене
"Стене" means "wall" in English (dative case of "стена").
In this sentence, 'стене' (on the wall) indicates the location of the picture, showing the prepositional case usage in Russian.
Картина висит на стене.
The picture is hanging on the wall.
Here, 'стене' describes the surface or structure where moss is growing, emphasizing attachment or relationship.
На старой стене росли мхи.
Moss grew on the old wall.
In this example, 'стене' refers to the wall as an object of observation, detailed within the prepositional case.