This is a collection of emoticons, called Kaomoji. Each of them has a different meaning. You can use them to show your feelings and emotions. When you want to say something but you don't know the proper wording, you can use an emoticon to tell the receiver what you want to say. With this app, you can easily copy and paste an emoticon into a text message. It is a very easy-to-use application. You can also use them to make a joke. There are a lot of different categories. There are emoticons for any topic and for any occasion. 

You can also send them to your friends. They will be able to understand what you want to say.