This is the 395th most frequent Korean word.
길을
"길을" means "a road" or "a path" in the accusative case.
In this sentence, '길을' refers to 'the path' as a direct object affected by the action of walking.
나는 길을 따라 걷는다.
I walk along the path.
Here, '길을' indicates 'the way or route,' which is the object lost in the action.
길을 잃어버렸어요.
I lost my way.
In this use, '길을' stands for 'directions or the way,' which is the subject of the inquiry.