This is the 7617th most frequent Polish word.
lekarz
Doctor.
The word 'lekarz' here refers to a professional medical practitioner who will perform an examination.
Lekarz zaraz przyjdzie i zbada pacjenta.
The doctor will come shortly and examine the patient.
In this sentence, 'lekarz' denotes someone skilled in medicine who offers medical advice or treatment.
Czy znasz jakiegoś dobrego lekarza?
Do you know a good doctor?
Here 'lekarz' refers to the aspirational professional designation in medicine that someone's aiming to achieve.