In typography, a font (also fount) is traitionally defined as a complete character set of a single size of a particular typeface. For example, the set of all characters for 9 point Bulmer is a font, and the 10 point size would be another font.
Trivia about font
The one seen here holds water, but one may also hold information as well
Times Roman is a typeface, Italic is a style, 12-point is a size & Times Roman Italic 12-point is this
A colophon is a section at the end of a book that often names this, like 10-point Baskerville