This is the 2287th most frequent Polish word.
tematem
"Tematem" means "the topic" or "the subject" in English.
The word 'tematem' functions as an instrumental singular form of the noun 'temat' in Polish, meaning 'topic'. It is used to indicate the subject or focus of the conversation in this sentence.
Tematem naszej rozmowy była literatura.
The topic of our conversation was literature.
'Tematem' again appears in the instrumental case, here signifying the particular aspect or topic that is being addressed, which is the report.
Musimy teraz zająć się tematem raportu.
We must now address the topic of the report.
In this sentence, 'tematem' denotes a topic with which the described problem is associated, again using the instrumental case for correlation.