SERIF AND SANS-SERIF.

Types

Serif Font

A typeface with serifs is called a serif typeface (or serifed typeface).  Serifs are considered to be decorative, their appearance may well serve a higher purpose. Serif typefaces have historically been credited with increasing both the readability and reading speed of long passages of text because they help the eyetravel across a line, especially if lines are long or have relatively open word spacing (as with some justified type).

Example of serif

Sans-Serif

  Sans-serif fonts are often used for headlines rather than for body text. Sans-serif fonts have become the most prevalent for display of text on computer screens. Sans-serif have different classifications, such as, Grotesque, Neo-grotesque, Geometric, and Humanist.

Example of sans-serif