A happy face, smiling face, smiley, or
:) is a stylized representation of a smiling humanoid face, commonly occurring in popular culture. It is commonly represented as a yellow (many other colors are also used) circle (or sphere) with two black dots representing eyes and a black arc representing the mouth. "Smiley" is also sometimes used as a generic term for any emoticon.
The variant spelling "smilie" is not as common, but the plural form "smilies" is commonly used.