This is the 2554th most frequent Chinese word.
石头
Stone; rock.
The word '石头' is used to refer to a literal physical object—a stone in this context.
我在河边捡了一块石头。
I picked up a stone by the river.
Here, '石头' represents objects used in a traditional stone-based game.
孩子们喜欢玩石头游戏。
Children like playing stone games.
The usage of '石头' here is metaphorical, likening life's challenges to hard stones.