This is the 16518th most frequent Polish word.
wieża
"Wieża" means "tower" in English.
Here, 'wieża' refers to the physical structure, the Eiffel Tower, used as a noun.
Wieża Eiffla jest znanym zabytkiem w Paryżu.
The Eiffel Tower is a famous landmark in Paris.
In this context, 'wieży' signifies the concept of a high, tower-like structure, forming a genitive case of the noun.
Na szczycie wieży roztacza się piękny widok.
A beautiful view spreads from the top of the tower.
Here, 'wieża' refers to a set of audio equipment, colloquially named 'tower', used as a noun in its nominative case.