This is the 7756th most frequent Polish word.
manuela
The Polish word "manuela" is a colloquial slang term referring to female masturbation.
In this sentence, 'Manuela' is used as a proper noun, referring to a person's name.
Manuela jest moją przyjaciółką.
Manuela is my friend.
Here, 'Manuelę' is the accusative case of the proper noun 'Manuela', indicating the direct object of the sentence.
Znam Manuelę od wielu lat.
I have known Manuela for many years.
In this example, 'Manueli' is the genitive case, used to show possession or association with the noun 'books'.