This is the 15216th most frequent Polish word.
serniki
"Serniki" are Polish cheesecakes.
The word 'serniki' is used here as a plural noun referring to cheesecakes prepared for holidays.
Uwielbiam serniki, które moja babcia piecze na święta.
I love cheesecakes that my grandmother bakes for the holidays.
In this context, 'serniki' represents the specific dessert chosen by the group in a café, again demonstrating its plural noun usage.
Do kawiarni przyszła grupa studentów zamawiając serniki i herbatę.
A group of students came to the café, ordering cheesecakes and tea.
Here, 'serniki' refers generally to the concept of cheesecakes as a typical sweet food enjoyed in certain social contexts, showing its general plural usage.