Riverside County and San Bernardino County to the north form this metro area. Like many such metro areas in the Southwest, it extends far into uninhabited desert areas, in this case east through the Mojave Desert to the Nevada/Arizona border. Larger than nine U.S. states, it is often referred to as the Inland Empire.
I agree with tchrist that the word doctor in doctor appointment is a noun (attributive noun I believe), although the definition of an attributive noun is a noun used as an adjective, so maybe it's just semantics at some point.
What is the difference between Meeting and Appointment? â¢ Appointment is an event or activity that requires a block of time at a future date and time that is set to meet another person. â¢ Meeting is similar to appointment but involves other persons, and there is also a designated place where people invited to attend the meeting reach.