Difference between
"don't" and "do not "

Do not ( کبھی بھی نہیں کرنا /) for permanent use (Formal)

Ex:- Do not smoke .
(means never smoke )
 Do not spit here .
(Means never spit here)
Do not use horn .
(Means never use horn)


Don't (ابھی مت کرو ) for temporary use(informal)

Ex:- Don't go there .
(Means you cannot go there now , after you can go there.)

Don't laugh .
(Means you can laugh later but , not now)

Don't sleep now.
(Means sleep after that but , not now )


**In the bus we read sentences like this.