I think it's kinda wild that Emoji is actually a Japanese word and that the resemblance to any English words like "emotion" is just a complete coincidence.
Taggart, Caroline (November 5, 2015). New Words for Old: Recycling Our Language for the Modern World. Michael O'Mara Books. ISBN 9781782434733. Retrieved October 25, 2017 – via Google Books. Hard on the heels of the emoticon comes the Japanese-born emoji, also a DIGITAL icon used to express emotion, but more sophisticated in terms of imagery than those that are created by pressing a colon followed by a parenthesis. Emoji is made up of the Japanese for picture (e) and character (moji), so its resemblance to emotion and emoticon is a particularly happy coincidence.
Taggart, Caroline (November 5, 2015). New Words for Old: Recycling Our Language for the Modern World. Michael O'Mara Books. ISBN 9781782434733. Retrieved October 25, 2017 – via Google Books. Hard on the heels of the emoticon comes the Japanese-born emoji, also a DIGITAL icon used to express emotion, but more sophisticated in terms of imagery than those that are created by pressing a colon followed by a parenthesis. Emoji is made up of the Japanese for picture (e) and character (moji), so its resemblance to emotion and emoticon is a particularly happy coincidence.