The primary purpose of typography is to convey information effectively and efficiently.

Color is not a key element of typography, as it does not directly affect the readability or visual appeal of text.

Leading is the term for the space between lines of text.

Display is not a type of font classification, as it refers to fonts designed for large-scale use, such as headlines and posters.

Kerning is the term for the space between letters in a word.

Serif with serif is not a common font pairing strategy, as it can result in a monotonous and visually unappealing design.

Baseline is the term for the line that runs along the bottom of a letter.

Cost is not a factor to consider when choosing a font, as there are many free and open-source fonts available.

Cap height is the term for the height of a capital letter.

Proper punctuation is not a common typographic error, as it is essential for clear and effective communication.

Ascender is the term for the line that runs along the top of a letter.

Serif with serif is not a common font pairing strategy, as it can result in a monotonous and visually unappealing design.

Tracking is the term for the space between words.

Repetition is not a key element of visual hierarchy in typography, as it can lead to a monotonous and visually unappealing design.

X-height is the term for the line that runs through the center of a lowercase letter.