This is the 15367th most frequent Polish word.
socjalnej
"Socjalnej" means "social" (related to society or social matters).
The word 'socjalnej' is used as an adjective form referring to 'work' (praca), indicating the type of work as related to social matters, such as assisting and supporting communities or individuals.
Posiadam doświadczenie w pracy socjalnej.
I have experience in social work.
Here 'socjalnej' acts as an adjective describing 'policy' (polityka), specifying its domain as related to societal welfare and support systems.
Odbyłem szkolenie z polityki socjalnej.
I attended training on social policy.
In this sentence, 'socjalnej' modifies 'integration' (integracja), denoting the realm of integration concerning social inclusion and support for individuals or groups.