Nain would be na-in (nah-een) or 나인. The ㅇ is a place holder, and sometimes used for the sound "-ong." You can't write "Nain" in hangul without the place holder. It would come out like 나ㅣㄴwhich has no form, lol. It would look like "na i n."
The word "lily" in Korean is written as ๋ฐฑํฉ (baekhap).
창원
아르와
I guess your talking about Korean boy group singer beast. You write like this: 비스트
taekwondo is 태권도
내 가족 My family
임창원.
It would be written as 안.
영어 (yeong-eo)
To write "Seth" in Korean, you would use the following characters: ์ธ์ค.
The name Cindy in Korean can be written as ์ ๋.
In Korean, the name "Sean" can be written as ์ (pronounced as "sheon") or ์ (pronounced as "seon").