Types of serif include: old-style, transitional, modern and slab. Garamond and Times New Roman are two classic serif fonts. Serif typefaces are sometimes called ‘roman’ because of this. Serifs have their origin in Roman stone carving, and are believed to be linked to the way that words were painted onto stone before they were carved. Serif fonts are so called because their letters feature serifs, small lines or strokes attached to the end of the main part of the letter.The biggest divide in the fonts world is between serif fonts and sans-serif fonts. Here’s a run-down of the most important terms you might find when researching fonts, and what they mean. All technical fields have their share of jargon and typography, to put it lightly, is no different.