This is the 6410th most frequent Russian word.
шар
"Шар" means "ball" or "sphere" in English.
In this sentence, 'шар' refers to a small spherical object, like a ball, in its most basic and common usage.
Маленький шар упал с полки.
The small ball fell from the shelf.
In this instance, 'шар' refers to a balloon, which is typically an air-filled spherical object used for decoration or celebration.
Он надул красивый воздушный шар.
He inflated a beautiful balloon.
Here, 'шар' is used metaphorically to describe Earth as a spherical shape, emphasizing its geometrical aspect.