This is the 7875th most frequent Polish word.
milley
The word "milley" does not exist in Polish. It may be a misspelling or misunderstanding.
Here, 'Milley' is used as a proper noun, specifically a given name and surname of an individual.
Generał Milley odwiedził Polskę w zeszłym tygodniu.
General Milley visited Poland last week.
In this sentence, 'Milley' represents a potential first name, and the sentence discusses familiarity with it.
Nie słyszałem wcześniej o osobie imieniem Milley.
I hadn't heard of a person named Milley before.
Here, 'milley' is treated as a term, posing the inquiry into its linguistic significance.