You cannot just wave your arms and mumble a lot of words and pretend they are the same.
I think you should be heeding some of your own advice there, buddy. Normally, I don't feed trolls, but I'm feeling particularly ornery today, so here goes...
So you're now quoting the very same layman's definition of a "ballast" from Wikipedia I referenced in our previous discussion here to belittle someone else for not being "educated"? This, coming from the same troll who was unable/unwilling to comprehend the fact that an offline LED power supply (whether a simple, linear deign, or a more complicated SMPS type) was analogous to a gas discharge lamp ballast... That's rich.
LED's require their junction current to be limited, period. However, when the power source cannot be configured to supply "constant current", and is a "constant voltage" type, a series resistor is inserted in circuit, with it's value selected based on desired junction current, source voltage, and junction voltage. That series resistance (whether supplied from winding resistance, external resistor, or a combination of both) is known as... ballast resistance.
Rather than continuing to cultivate your own astonishing ignorance on subject matters you obviously know less than nothing about, I'd suggest you search that empty head of yours and try to locate two brain cells to rub together, educate yourself before you speak/type, and try to form a coherent thought. I know that may be a stretch for you, but give it a try - you'd be a better person for it.
And, if you aren't willing to actually try, then shut your trap.