Phycologist = A man or woman who is trained to listen to people with no to mild mental issues, be it temporary or historical, ask questions such as "and how did that make you feel?" or "would you like to talk about your father?" maintain you as a client for an indefinite amount of time and actually make altogether little to no difference into your quality of life anymore than a good friend would. (You can easily substitue mental to physical and get a description for a physiotherapist)
Psychiatrist = A man or woman who is trained to write prescription drugs for craploads of money that you can get from the black market for half the price and twice the strength.
I kid... I kid... New Yorkers and Londoners would have died out without them...
Actually, you're almost spot on.