try this site whenever you need to know an English->Japanese word.
http://www.freedict.com/onldict/jap.HTML
but I'll save you some time:
Luna is a latin term, so you'll have to use moon, which is tsuki.
Hana.
Gorira
nope
Doku (毒)
薔薇 bara
if by "bi" you mean bye? then "sayonara" is the word.
本, it is said "Hon"
luna(moon)
The Latin word for moon is "luna."
ルナ ru・na [pronounced as Luna]
"Luna" is the Latin word for "moon."
Moon