[garbanzo]

Agnostics say "don't know" whereas atheists say "I know/believe that there is No god". The athiest has no proof of his position, he takes it on faith.

No they don't. The very word "atheist" is like "aleprechuanist" - without a belief in (god/leprechauns). There is no separate concept for "not knowing" whether or not there are leprechauns, either one accepts the existence of leprechauns or you don't. Similarly if one "doesn't know" or "doesn't care" if god exists, then you are an atheist, you are without a god.

[weegee]

What is the word (not one that you made up) for one who believes in leprechauns?

God is a universal concept shared by remotely separated people. They may not all share the same concept of God, but know what each other is talking about when you say "God".

Leprechauns are regional folklore from Ireland not shared by other societies.