This is the 840th most frequent Ukrainian word.
причин
The Ukrainian word "причин" means "causes" in English (genitive plural form of "причина").
The word 'причин' is used as the plural genitive case form of the noun 'причина', meaning 'reasons'.
У зростанні цін є декілька причин.
There are several reasons for the price increase.
Here, 'причини' is the accusative plural case of 'причина', indicating the objects being addressed.
Щоб уникнути негативних наслідків, слід усунути всі причини.
To avoid negative consequences, all causes should be eliminated.
In this sentence, 'причин' appears as a genitive singular for the noun 'причина', assumed in context, used abstractly to define an attribute.