This is the 10075th most frequent Polish word.
bezrobocia
Unemployment.
Here, 'bezrobocia' is used as a noun in the genitive singular form, denoting 'unemployment'. It fits into the context of a larger social issue.
Bezrobocia w kraju wzrosła z powodu kryzysu gospodarczego.
Unemployment in the country increased due to the economic crisis.
In this sentence, 'bezrobociu' is the dative singular form of 'bezrobocie'. It is used to indicate the entity being acted upon, in this case, unemployment in general.
Programy przeciwdziałania bezrobociu mogą pomóc wielu osobom.
Programs against unemployment can help many people.
Here, 'bezrobocia' again appears in the genitive singular form to describe the effects or consequences associated with 'unemployment'.