Ever wonder how many different variations are there in a font family?
Normally, we will find the following set of weights (regular, italic, bold, bold italic) in a typeface for regular usage. You can open Character panel to see that.
For some more intensive work, like publication or corporate branding design, where typography technique plays a heavy role, a comprehensive family suite of a typeface helps stylistically and logistically.
The following chart, created by fontshop.com, illustrates simply what weights and width are there in a font family.

Weights and widths
For further readings, go to this link.












