This is the 865th most frequent Polish word.
ćwiczenia
"Exercises" or "practice."
In this sentence, 'ćwiczenia' refers to physical exercises or fitness activities performed regularly to maintain health and fitness.
Codzienne ćwiczenia pomagają utrzymać dobrą kondycję.
Daily exercises help maintain good fitness.
Here, 'ćwiczenia' means practice problems or tasks designed to help one learn and improve in mathematics.
Ćwiczenia z matematyki są bardzo trudne w tej książce.
The math exercises are very difficult in this book.
In this context, 'ćwiczenia' signifies hands-on or practical tasks done to practice or reinforce learning during a course or training.