This is the 18475th most frequent Russian word.
яблонь
The Russian word "яблонь" means "apple tree."
Here, 'яблонь' is in the genitive plural case, indicating possession or relationship within the context of the quantity 'много' (many).
В саду было много яблонь.
There were many apple trees in the garden.
In this sentence, 'яблонь' is also in the genitive plural case, used here to specify what type of leaves the listener is discussing.
Люблю слушать, как ветер колышет листья яблонь.
I love listening to how the wind rustles the apple tree leaves.
Again, 'яблонь' is in genitive plural, used here in a descriptive sense to denote the specific trees being referenced.