This is the 490th most frequent Romanian word.
invaziei
"Invaziei" means "of the invasion" in English.
The word "invaziei" is in the genitive singular case, used here to signify "of the invasion."
Consecințele invaziei au fost devastatoare pentru regiune.
The consequences of the invasion were devastating for the region.
In this sentence, "invaziei" is in the genitive singular case, indicating the description of the noun ("the beginning of the invasion").
Martorii oculari au oferit detalii despre momentul începerii invaziei.
Eyewitnesses provided details about the moment when the invasion started.
Here, "invaziei" is also in the genitive singular case, used to describe possession or association ("of a future invasion").