This is the 1809th most frequent Polish word.
zmieniają
"(they) change"
The word 'zmieniają' is used as a verb in the third person plural, indicating an ongoing action.
Ludzie zmieniają swoje nawyki.
People change their habits.
In this sentence, 'zmieniają' is a future action but would need slight adjustment to 'zmienią' for proper tense representation.
Zmienią kolor tego samochodu na czerwony.
They will change the color of this car to red.
Here, 'zmieniają' conveys a habitual action in the present tense.