한국어로 ""fan"을 어떻게 말 해요?
How can I say "fan" in Korean?
(한국어로 "fan" 어떻게 말 합니까/하나요? is more polite.)
한국어로 "fan"이 뭐에요?
What is "fan" in Korean?
My Korean friend said that in his opinion (which I believe) that if you want to know only a word, then the "뭐에요?" style sounds better. (more natural)
However, for full sentences or phrases, then the "어떻게 말해요?" style is better.
The answer by the way: 선풍기 = fan in Korean. ㅋㅋㅋㅋ