This is the 602nd most frequent Polish word.
zwycięstwa
"Zwycięstwa" means "victories" in English.
Used in a general context to signify the essence of victory.
To był dzień pełen zwycięstwa.
It was a day full of victory.
Here, it refers to a specific occurrence of triumph.
Cieszymy się z naszego zwycięstwa w meczu.
We are happy about our victory in the match.
Used in plural form to indicate multiple triumphs.