This is the 16617th most frequent Russian word.
сельский
"Сельский" means "rural" or "pertaining to the countryside."
Here, 'сельский' is used as an adjective to describe the location or character of the house.
Сельский дом окружён полями и лесами.
The rural house is surrounded by fields and forests.
In this sentence, 'сельская' modifies 'жизнь' to express a type of lifestyle associated with the countryside.
Сельская жизнь обладает особым очарованием.
Rural life has a special charm.
Here, 'сельском' is the instrumental case of 'сельский' used to describe the geographical characteristic of the area.