What is leading?
Leading is the distance between two lines of type.
What is kerning?
Kerning is the individual spaces between letterforms
What is tracking?
Tracking is the distance between all letters in a sample of text.
What is the difference between serif and san serif?
A serif is the small visual element at the end of a stroke. San serif is text without that visual element.
What is the difference between x-height and cap hight?
X-height is the hight of the lowercase letters and cap hight is the hight of uppercase letters.