This is the 8976th most frequent Polish word.
sochaczewie
"Sochaczewie" is the locative case of "Sochaczew," a town in Poland, used to refer to being in or about Sochaczew.
Here, 'Sochaczewie' is used in the locative case to indicate the location where one resides or stays.
Mieszkam w Sochaczewie od wielu lat.
I have lived in Sochaczew for many years.
In this sentence, 'Sochaczewie' appears in the locative case, used to specify the location of the museum.
Czy odwiedziłaś kiedyś muzeum w Sochaczewie?
Have you ever visited the museum in Sochaczew?
Here, 'Sochaczewie' is in the locative case, describing the place where the events occurred, as part of a discussion.