This is the 17297th most frequent Polish word.
zamieniali
"Zamieniali" means "they exchanged" or "they replaced" in English.
Here, "zamieniali" is used to describe an action of exchanging or swapping things reciprocally.
Oni zamieniali się miejscami podczas lekcji.
They were swapping seats during the lesson.
In this context, "zamieniali" refers to the act of trading or exchanging one item for another.
Ludzie często zamieniali złoto na towary w dawnych czasach.
People often exchanged gold for goods in ancient times.
Here, "zamienialiśmy" is used to express a habitual action in the past tense related to exchanging things.