This is the 7160th most frequent Polish word.
iwaszko
"Iwaszko" is not a standard Polish word; it is likely a proper noun, such as a surname.
Here, 'Iwaszko' is used as a proper noun, likely referring to a given or family name of an individual.
Iwaszko zawsze dbał o swoje rzeczy.
Iwaszko always took care of his belongings.
In this sentence, 'Iwaszko' is again used as a proper noun, indicating the surname of a professor.
Czy poznajesz profesora Iwaszko?
Do you recognize Professor Iwaszko?
Here, 'Iwaszko' refers to a surname, representing a family name.