This is the 4063rd most frequent Portuguese word.
oncologia
Oncology: The branch of medicine that deals with the prevention, diagnosis, and treatment of cancer.
In this sentence, 'oncologia' is used as the subject, referring to the field of medicine dedicated to studying cancer and providing treatment.
Oncologia é a especialidade médica que estuda e trata o câncer.
Oncology is the medical specialty that studies and treats cancer.
Here, 'oncologia' functions as part of a noun phrase describing a department within the hospital.
O hospital é conhecido por possuir um excelente departamento de oncologia.
The hospital is known for having an excellent oncology department.
In this instance, 'oncologia' is part of the noun phrase 'área de oncologia,' indicating the particular field within medicine she chose to specialize in.