This is the 13316th most frequent Polish word.
osiemnaście
Eighteen.
Here, 'osiemnaście' is used as a number to indicate age.
Mam osiemnaście lat.
I am eighteen years old.
Here, 'osiemnaście' is used as a numeral to quantify elements.
W tym zadaniu policzyłem osiemnaście elementów.
In this task, I counted eighteen elements.
Here, 'osiemnaście' is used to denote a page number.