This is the 11210th most frequent Polish word.
grubości
"Grubości" means "thickness" in English.
Here, 'grubość' is used to describe the measurement of thickness of a physical object, the book.
Książka ma grubość dwóch centymetrów.
The book has a thickness of two centimeters.
In this sentence, 'grubość' refers to the specified measurement of thickness for a material, emphasizing the dimensional requirement.
Do naszego projektu potrzebuję deski o grubości pięciu milimetrów.
For our project, I need a board with a thickness of five millimeters.
Here, 'grubość' is used to indicate the adequate property of the wall, namely its thickness, as it relates to sound insulation capabilities.