rural regions
"The scenic countryside stretched out as far as the eye could see, filled with rolling hills and open fields typical of rural regions."
A rural area, or the rural part of a larger area.
"The hikers left the busy city to explore the quiet beauty of the countryside."
In plain English: The countryside is open land outside of big cities where there are usually farms, forests, and fewer people living around.
"They decided to rent a cabin in the quiet countryside for their summer vacation."
Usage: Use countryside to refer specifically to open, non-urban areas rather than general remote locations like deserts or mountains. It often pairs with prepositions such as "in" when describing location and works well in phrases contrasting city life with nature.
This word is a combination of "country" and "-side," which was first used to describe the land outside of towns or cities. It directly describes the rural areas surrounding populated places without any shift in its original meaning.