Some typeface names are humorous — even if they were not intended to be so — like “Zapf,” “Friz Quadrata,” “Bodoni Bold” and “Harry Heavy.”
[above] The varieties within each face, such as bold, italic and roman (i.e., not italic) are fonts. Rockwell is a typeface. Rockwell bold is a font. Sometimes “font” is used to mean all of the varieties within a typeface (e.g., “The Rockwell font has 832 characters.”) — or even the typeface itself. The terms “font” and “typeface” seem to be merging.
Sometimes “font” is used for a very specific typeface description like “24 point Century Gothic bold italic.”
[above] “Letterform” may mean the basic shape of a character, regardless of the typeface. You could say that “the letterform of a zero is oval.” Almost every version of the uppercase “A” has the same letterform: two converging vertical (or almost vertical) lines with a crossbar.
[above] The farther a letterform evolves from its traditional shape, the more likely it is to be unrecognizable, or confused with another letter.
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