• home made = people doing it for fun / whatever
• amateur = doing it for the love of it, or the possibility of money
• professional = being paid to do it
So "Home Made" is two people just fucking around one time and filming it.
Amateurs are people who love porn and make it a hobby. They do it all the time because they love it or hope to maybe make some money off it.
A professional is some who is paid to do it. Not just a possibility to get paid, or was paid once. Like makes an income from it, and is paid/agreed to be paid prior to the act.
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