Font:
Set of characters of same style and size.
File:
Collection of data stored in one unit.
Font file:
Contains one or more fonts that can be accessed by operating system and applications.
Go to control panel.
Open fonts.
Can see different font styles.
How to download and add a new font file:
Open in google www.dafont.com
Select font and download.
After downloading install it.
Now we can see in control panel obelix pro font is added to your fonts.