Most fonts can be broken down into two general categories. Those categories are “Serif” and “Sans-serif,” and the difference between the two is very simple: One has decorative “feet” while the other doesn’t.
We normally associate Sans-serif fonts to be informal and clearer to read, we would use them as mastheads on magazines or on a PowerPoint presentation to children! Serif fonts on the other hand are more sophisticated, we would use them when writing letters and on magazines with a more formal audience.