"quality" comes from development<p>"quality assurance" comes from testing, where you're checking to make sure the product is quality, to make sure development actually produced quality code.
quality does not come solely from development<p>quality comes from 1000s of little things you and your team do, when creating software.<p>some times that involves development.
testing plays a role (albeit a very small one)<p>but quality, quality assurance, whatever you want to call it , is much much more than just code and test