This is the 4968th most frequent Polish word.
podwojenia
"Podwojenia" in English means "doublings" or "duplications."
Here, 'podwojenia' (doubling) is used as a noun in the genitive case referring to the act or result of doubling something.
Podwojenia liczby uczestników na konferencji było sukcesem organizatorów.
The doubling of the number of participants at the conference was the organizers' success.
In this sentence, 'podwojeniem' is in the instrumental case, used to describe the action or method of achieving the goal of doubling savings.
Pracuję nad podwojeniem swoich oszczędności poprzez inwestycje.
I am working on doubling my savings through investments.
The word 'podwojenie' is used nominatively as the subject, denoting the act of doubling effort.