This is the 17999th most frequent Polish word.
światową
"Światową" means "worldwide" or "global" in English.
Here, "światową" is used as an attribute adjective in the feminine singular accusative form, modifying "sławę" (fame), indicating the scope or reach of the fame, which is worldwide.
Ona zdobyła światową sławę dzięki swojej muzyce.
She gained worldwide fame thanks to her music.
In this sentence, the word is part of the genitive case ("światowej"), relating to "rangi" (importance; rank), describing the scale or significance as being of worldwide level.
To było wydarzenie światowej rangi.
It was an event of worldwide importance.
Here, "światową" functions as an attribute adjective in the feminine singular instrumental form, modifying "organizacją" (organization), describing it as global.