ASCII is a term for the character set based on the Roman alphabet and is the character set that we use in the US.

Then there is ascii art. This is where you use the ascii character set to make art.

>(o)
(_~_/
~~~~~~~
Rubber Duck


           (__)                     
           (oo)                     
    /-------\/ 
    / |     ||
  *  ||----||
     ~~    ~~

Cow

And then there is this