specify the name of the font family to use (e.g. "Times","Courier","Helvetica")
Typical elements used in the setting for BaseStyle.
If you use the standard notebook front end for the Wolfram Language, then you can set BaseStyle to be the name of a style defined in your current notebook's stylesheet. You can also explicitly specify how text should be formatted by using options such as FontSize and FontFamily. Note that FontSize gives the absolute size of the font to use, measured in units of printer’s points, with one point being inches. If you resize a plot whose font size is specified as a number, the text in it will not by default change size: to get text of a different size you must explicitly specify a new value for the FontSizeoption. If you resize a plot whose font size is specified as a scaled quantity, the font will scale as the plot is resized. With FontSize->Scaled[s], the effective font size will be s scaled units in the plot.
You should realize that the ability to refer to styles such as "Section" depends on using the standard Wolfram Language notebook front end. Even if you are just using a text‐based interface to the Wolfram Language, however, you can still specify formatting of text in graphics using options such as FontSize. The complete collection of options that you can use is given in "Text and Font Options".