This is the 17846th most frequent Polish word.
ørganka
The word "ørganka" is not Polish; it appears to mix Polish and Danish orthography. Perhaps you mean "organka," which colloquially refers to a small hand-operated or pedal organ (harmonium) in Polish.
Here, 'ørganka' refers to a small musical instrument, a harmonica.
Mam starą ørgankę w szafie.
I have an old harmonica in the closet.
In this usage, 'ørganka' signifies the instrument that is being taught or learned.
Dzieci uczą się grać na ørgance w szkole.
Children learn to play the harmonica in school.
Here, 'ørganka' emphasizes the quality of sound produced by the harmonica when played skillfully.