This is the 748th most frequent Chinese word.
公路
"Public road" or "highway."
公路 refers to a road here, emphasizing its function as a route for travel.
我每天都必须经过一条蜿蜒的公路去上班。
I have to travel through a winding road every day to get to work.
公路 describes a coastal road, highlighting its scenic aspect for tourism.
旅游时，我们沿着沿海公路欣赏风景。
During the trip, we enjoyed the scenery while driving along the coastal road.
公路 is used to denote a highway, conveying the infrastructure aspect of the term.