$ sudo apt-get update
$ sudo apt-get install kdeartwork-emoticons 

kdeartwork-emoticons is installed in your system.

Make ensure the kdeartwork-emoticons package were installed using the commands given below,

$ sudo dpkg-query -l | grep kdeartwork-emoticons *

You will get with kdeartwork-emoticons package name, version, architecture and description in a table

kdeartwork-emoticons package basic information: