This is the 13947th most frequent Polish word.
porz
The word "porz" does not exist in standard Polish vocabulary.
Here, 'porzuć' is the imperative form of the verb 'porzucić', meaning 'to abandon' or 'to let go'. It encourages the listener to leave something behind, metaphorically their worries.
Porzuć swoje obawy i zacznij działać.
Let go of your worries and start taking action.
In this sentence, 'Porzucenie' is a noun derived from the verb 'porzucić'. It refers to the act of abandoning something, in this case, plans.
Porzucenie planów na przyszłość było dla niego trudne.
Abandoning plans for the future was difficult for him.
Here, 'porzucić' is used as the verb in the infinitive form, meaning 'to abandon'. It suggests leaving something unfinished.