1>Procedure can return zero or n values whereas function can return one value which is mandatory.
2>Procedures can have input,output parameters for it whereas functions can have only input parameters.
3>Procedure allow select as well as DML statement in it whereas function allow only select statement in it.
4>Functions can be called from procedure whereas procedures cannot be called from function.
5>Exception can be handled by try-catch block in a procedure whereas try-catch block cannot be used in a function.
6>We can go for transaction management in procedure whereas we can't go in function.
7>Procedures can not be utilized in a select statement whereas function can be embedded in a select statement.