This is the 2193rd most frequent Polish word.
przeprowadzić
"Przeprowadzić" means "to carry out," "to conduct," or "to transfer/move."
The verb 'przeprowadzić' here is used in the sense of 'conduct' or 'carry out' an organized activity or event.
Nauczyciel przeprowadził interesującą lekcję o historii.
The teacher conducted an interesting lesson about history.
In this sentence, 'przeprowadzić się' is a reflexive verb meaning 'to move' from one residence to another.
Postanowili przeprowadzić się do większego mieszkania.
They decided to move to a larger apartment.
The word 'przeprowadzić' again means 'to conduct,' specifically referring to carrying out scientific research or experiments.