Not wishing to be associated with GUEST, but never the less trying to be helpful to people who do not understand the difference but would like to, then this is my offering.

In typography, a typeface is a co-ordinated set of letter designs, making a complete alphabet, and generally intended to be made into a font for printing or use on a computer display.

The art of designing typefaces is called type design, being the occupation of a type designer.

A font (originally fount, from typefoundry) is a set of glyphs (images) representing the characters from a particular character set in a particular typeface. In digital fonts, the image of each character may be encoded either as a bitmap (in a bitmap font) or by a higher-level description in terms of lines and curves enclosing space (an outline font, also called "vector font").

The term fount has been used for centuries to refer to the contemporary technological device used to print in a particular size and typeface (though in phototype and digital type, it need no longer refer to a specific size). Virtually all founts were cast in various lead alloys from the 1450s until the middle of the 20th century. A few large founts were made of wood, especially in the USA. This is known as wood type. There was a relatively brief overlapping period (ca. 1950s-1990s) where photographic technology, known as phototypesetting, was used; founts came on rolls or discs of film. From the mid-1980s the move to digital typography has been relentless and the American spelling has been almost universally adopted. The term font nowadays almost always refers to a computer file containing scalable, outline letterforms, usually in one of several common formats. Some fonts, such as Microsoft's Verdana are intended primarily for use on computer screens.