This is the 17643rd most frequent Polish word.
zieleń
"Zieleń" means "greenery" or "the color green" in English.
In this sentence, 'zieleń' is used as a noun that represents the green plants and vegetation collectively.
Zieleń w ogrodzie jest niezwykle relaksująca.
The greenery in the garden is extremely relaxing.
Here, 'zieleń' refers to the color green, used to describe the paint's color for the wall.
Malowałem ścianę na zieleń, bo lubię ten kolor.
I painted the wall green because I like that color.
This sentence uses 'zieleń' again as a noun, signifying the abundance and vibrance of green during spring.