A font is a family of weights/sizes of a certain typeface that is utilized with desktop publishing software, in either a Windows, Macintosh, or Linux environment (previously this was all set by hand in a letterpress environment).
Calligraphy, and more correctly applied to your situation, is defined as the art of writing.
My day job is graphic design, and I don't want any of that in my tattoo world. DROPPIN' KNOWLEDGE LIKE MADBALL sSSSonnnn!