This is the 3378th most frequent Russian word.
поменять
"Поменять" means "to change" or "to exchange."
Here, 'поменять' is used to indicate exchanging one thing for another.
Я хочу поменять свою старую машину на новую.
I want to trade my old car for a new one.
In this example, 'поменять' is used in the sense of transitioning from one state or occupation to another.
Он решил поменять свою профессию и стал художником.
He decided to change his profession and became an artist.
This usage of 'поменять' refers to the act of converting one currency into another.