This is the 330th most frequent Italian word.
miliardi
"Billions."
The word 'miliardi' is used to represent a large number, specifically billions, referring to the vast quantity of stars.
Ci sono miliardi di stelle nella galassia.
There are billions of stars in the galaxy.
In this usage, 'miliardi' is an exaggeration to express frustration or emphasis, rather than a literal count.
Miliardi di volte ho ripetuto questo avvertimento.
Billions of times I have repeated this warning.
Here, 'miliardi' signifies a financial quantity, showing the large profits made by companies.