Author? Writer?

Earlier this morning I had to define myself for the purposes of an upcoming event, and I stumbled.  There was to be a single one word descriptor, followed by a bio.

One. Word. Descriptor.

Author? I wondered.  Or writer?

Writer feels where I am, just now in my career.  Author is what I think I'm supposed to be (when I grow up, when I get all this, when all this gets at least a little easier). 

Do you feel as I do, about those words?  Does the word author seem somehow enthroned?  Or am I obsessing...