This is the 16175th most frequent Polish word.
ulubiona
"Ulubiona" means "favorite" (feminine form) in English.
Here, 'ulubiona' modifies the feminine noun 'książka' (book), indicating that it is a singular feminine adjective form.
Moja ulubiona książka to 'Harry Potter'.
My favorite book is 'Harry Potter'.
In this sentence, 'ulubiona' again serves as an adjective describing the feminine noun 'potrawa' (dish), indicating a preference.
Jej ulubiona potrawa to pierogi.
Her favorite dish is pierogi.
Here, 'ulubiona' applies to the feminine noun 'muzyka' (music), showing that it agrees in gender and case.