This is the 9440th most frequent Polish word.
walking
The Polish word "walking" refers to the act of walking, often as a form of exercise or leisure.
In this sentence, 'chodzenie' is used as a noun (gerund) to describe the act of walking.
Chodzenie po parku sprawia mi przyjemność.
Walking in the park gives me joy.
Here, 'idącą' is a present participle used to describe the act of walking by the girl.
Widziałem dziewczynę idącą chodnikiem.
I saw a girl walking on the pavement.
In this sentence, 'chodzić' is an infinitive verb form indicating an activity one might enjoy.