멀어요 or 멀이에요?
The sentence I'm wondering about is:
부산이 여기에서 멀어요?

Can I also ask:
부산이 여기에서 멀이에요?

If yes, what's the difference? If not, why?

Question

멀어요 or 멀이에요?
The sentence I'm wondering about is:
부산이 여기에서 멀어요?

Can I also ask:
부산이 여기에서 멀이에요?

If yes, what's the difference? If not, why?

Answer

*You can not say '멀이에요'. '이에요/예요' is only followed by a noun. But '멀' is a verb stem of '멀다'.

e.g. ) 저는 한국 사람 (noun) + 이에요 --> 저는 한국 사람이에요. (I am Korean.)

* The present polite ending '아요/어요' is conjugated with a verb stem.
e.g. ) 예쁘 (the verb stem of 예쁘다) + 어요 --> 예뻐요.
 제 친구는 예뻐요. (My friend is pretty.)

Answer

Also, what we would consider adjectives, are often conjugated like verbs in Korean.