font. typeface

A “typeface” and a “font” are not synonyms.

A “typeface” is a broad family, like Arial.

A “font” is a specific style, like Arial in italics.

Addendum (1/20/2023): As Daniel Victor, a New York Times reporter, puts it: “Though often used interchangeably, fonts and typefaces are not the same thing. Calibri is a typeface, while fonts include other factors, like size or bolding. A 12-point Arial is a different font than a 14-point Arial, but they use the same typeface of Arial.”