Emoji vs. Smiley

Difference Between Emoji and Smiley
Emojinoun
A digital graphic icon with a unique code point used to represent a concept or object, originally used in Japanese text messaging but since adopted internationally in other contexts such as social media.
Smileyadjective
Cheerful and happy; smiling.
Smileyadjective
(slang) Having one's throat slit from side to side.
Smileynoun
A simplified representation of a smiling face.
Smileynoun
(Internet) A sequence of keyboard characters used to represent a happy mood, especially :) or :-) or other depiction of smiling.
Smileynoun
(rare) An improvised street weapon consisting of a length of chain with padlocks and other heavy objects affixed to one end.
Smileynoun
(South Africa) A roasted sheep's head.
Smileynoun
The type of piercing of the upper frenulum (upper lip) [https://books.google.com/books?id=83sjmTPnz48C&pg=PA118&dq=scrumper+lip&hl=en&sa=X&ved=0CCMQ6AEwAWoVChMI9eC8jqfQxwIVlyWICh0mzw1H#v=onepage&q=scrumper%20lip&f=false]
Smileynoun
an emoticon of a smiling face