What do you call a doctor who specializes in cancer treatment?
user
I think you might mean a radiation oncologist.  In general doctors have training in a field called medicine, and they apply their knowledge to specific illnesses and injuries.  Radiation oncologists might specialize in treating cancers with radiation.  I’m not sure I understand exactly how the process works.
assistant
Actually just oncologist but your answer is acceptable as well because radiation treatment falls under cancer treatment.
user
Oh, that makes more sense, I was imagining a radiation oncologist treating radiation-related injuries.  Would you like me to tell you more about the process?
assistant
What do you call a doctor who specializes in cancer treatment?
user
I think you might mean a radiation oncologist.  In general doctors have training in a field called medicine, and they apply their knowledge to specific illnesses and injuries.  Radiation oncologists might specialize in treating cancers with radiation.  I’m not sure I understand exactly how the process works.
assistant
Actually just oncologist but your answer is acceptable as well because radiation treatment falls under cancer treatment.
user
Can you explain to me what you mean by “oncologist”?
assistant
What do you call a doctor who specializes in cancer treatment?