This is the 2715th most frequent Polish word.
dokument
A "document."
Here, 'dokument' denotes an official or important written paper or record.
Zgubiłem ważny dokument podczas podróży.
I lost an important document during my trip.
In this case, 'dokument' is used to refer to a form of identification paper such as an ID card.
Student musiał przedstawić dokument tożsamości na egzaminie.
The student had to present an identity document at the exam.
In this usage, 'dokument' is part of the term 'dokumentalny,' indicating a non-fictional film or media presenting factual information.