The NG button emoji represents a red button with 'NG' written on it.
Unicode: U+1F196
The NG button emoji is used to indicate something negative, unacceptable, or a failure. It can be used to express disapproval, rejection, or the inability to proceed with a particular action or idea. The 'NG' stands for 'No Good' and is a common abbreviation used in various contexts.
"Sorry, your application has been rejected. ð"
"That idea won't work. ð Let's try something else."
"The test failed. ð I'll have to study harder next time."