Typeface
also called font, font family
A designed set of letterforms; a font is one specific style or weight of it.
The lettering design itself. "Font" is the file you install.
What It Is
Typeface is part of Brand, and more precisely Identity. The working definition is simple: a designed set of letterforms; a font is one specific style or weight of it.
It is a label with a settled working definition, so the value is in using it the same way every time. Held that way, the term stays useful instead of turning into decoration.
How It's Used
Typeface comes up in positioning conversations, identity decisions and the language a business commits to. It rarely travels alone — expect it next to Typography and Type Scale. The practical test is whether everyone in the room means the same thing by it.
Why It Matters
Getting Typeface wrong is expensive in a quiet way. When it is unclear, every later choice about message, design and channel is made on sand. The businesses that treat it seriously spend less time redoing work.
It is a label people agree on so they stop describing the same thing five different ways. The lettering design itself. "Font" is the file you install.
Termshift™
How the meaning shifts depending on who is using it, and where.
In agency and in-house rooms, Typeface means exactly a designed set of letterforms; a font is one specific style or weight of it.
In plain conversation it comes out as the lettering design itself. "Font" is the file you install.
The Bottom Line
Typeface is not complicated — it is just often left vague. The lettering design itself. "Font" is the file you install. Decide it, write it down, move on.