An origin is a start. You could say that the origin of yoga was in India, since that's where the practice began, or that the origin of the strawberries in the market is Mexico, since they were grown there.
If your best friend asks you about the origin of your fear of mariachi bands, it means that she wants to know where your phobia came from. Your ancestry is another kind of origin — you might mention your Eastern European origin if that's where your ancestors came from. The root, start, or birth of something is its origin. The origin of the word origin is the Latin word originem, meaning "rise, beginning, or source."