This is the 6124th most frequent Polish word.
applebaum
"Applebaum" is not a Polish word; it is a surname of German or Jewish origin meaning "apple tree."
In this sentence, 'Applebaum' refers to a proper noun, specifically the name of an author. It is used directly as a surname associated with her written work.
Mamy książki autorstwa Anne Applebaum, które są bardzo ciekawe.
We have books written by Anne Applebaum, which are very interesting.
Here, 'Applebaum' is used as a nickname or informal name for a mansion recognized by this title in the local area.
Na rogu ulicy stoi willa, którą nazywają 'Applebaum'.
At the corner of the street stands a mansion they call 'Applebaum'.
In this example, 'Applebaum' is used as a surname referring to a family, emphasizing their story and traditions.