alot of rock bands are like a verb then a number or letter
"Blink182"
"Sum 41"
then there are some one word ones. Most of the good ones are taken tho.
Evanescence found their name by looking through the dictionary. Maybe you want a name that means something to you. Evanescence means "To dissipate, or dissapear like water vapour." this describes them well...
ah well that probably didnt help, but im bored so im rabling