An emoticon is the representation of a facial expression using punctuation marks,
numbers and letters, written to express a person's feelings. It also refers to "smiley".
It comes from the words "emotion" and "icon".
An emoji a small digital image or icon used to express an idea, emotion, etc., on an electrical device. We used to have to download this app but now all social media and phones use emojis automatically.
An emoticon is a typographic display of a facial representation, used to convey emotion in a text only medium. Like so:
;-)
Emoticon differ from emoji. Emoji are actual pictorial representations.
Eg. "Do you use emoticons when you write emails or send text messages?"
"Yes, but I prefer emoji as they are more expressive."
emoticon は、顔の表情を表したもので、文字の媒体でのみ感情を伝えるために使われます。;-)のような感じです。
Emoticonは、emoji（絵文字）とは違います。 emojiは、実際に絵で感情を表します。
例文
"Do you use emoticons when you write emails or send text messages?"
メールを描いたりテキストメッセージを送る時に顔文字を使う？
"Yes, but I prefer emoji as they are more expressive."
うん、でも絵文字の方が、表現力が豊かだから好きだね。
Explanation
An Emoticon represents a facial expression such as a smile or frown, and is formed by combining various keyboard characters. They are used in electronic communication and can convey the writer's feelings.
A smiley is a symbol used in written language to indicate the writer's emotions at the time of writing.
Cryptic language is one way of expressing oneself during a chat, or while texting or emailing others. It is like a shortcut to using words, phrases, expressions etc.
An Emoji is a small digital image or an icon and it is used to express a idea or emotion when one is communicating electronically.
Emoticons can be used to express your current mood, situation or feeling about something. It is a special way of communicating also. The emoticons used in Japan differ compare to those used in different countries. For example.
Hello, how are you feeling today?
Hey there, I am feeling very (^_^) today :)
Another example can be: I <3 you.
顔文字は、今の気分、状態、または気持ちを表すために使われます。コミュニケーションを取る上で、特別な方法でもあります。日本で使われる顔文字は、他の国で使われるものと違います。
例えば、
Hello, how are you feeling today?
こんにちは、今日は気分はどう？
Hey there, I am feeling very (^_^) today :)
やあ！今日は、とてもいいよ。
他の例では、
I <3 you.
愛してるよ。
顔文字を英語にいうと 'emoticon' と言います。
最近は和製言葉の「絵文字」'emoji' とも使います。
たとえば
「このアプリは可愛い顔文字がいっぱいあります。」
'This app has lots of cute emoticons.'
「昔は男性より女性が顔文字の利用が多かったんですが最近は男性もよく使います。」
'It used to be that women used more emoticons than men, but recently men have started using them more too.'
という風に使います。
We can use 'emojis' or 'emoticons' to describe the faces we can make using symbols and characters from our computer or phone keyboard.
We can also refer to the specific face by saying 'wink face', 'smiley face' and 'sad face' etc
We use these faces and little pictures for extra expression when we are texting on the phone.
There is a range of emoticons to use, from faces to animals, numbers, shapes, etc.
フィリピン 
イギリス 
ニュージーランド 
アメリカ合衆国 
南アフリカ 
オランダ 
