Access denied to user@localhost

As a root user I did this:

GRANT DELETE, SELECT, INSERT, UPDATE, EXECUTE ON dbName.* TO'user'@'localhost' IDENTIFIED BY 'apassword';

In 'dbName' I created a procedure 'proc_name' with definer set to 'user'@'localhost'.

Similarly I create a function 'func_name' with definer set to 'user'@'localhost'.

Now the issue is, I'm able to do select func_name(); but I'm not able to call the procedure proc_name()

When i did :

call proc_name(), I get the below error:

ERROR 1044 (42000): Access denied for user 'user'@'localhost' to database 'dbName'

Any pointers to the solution would be appreciated.