How cute, you just posted diagrams for what I just told you. Rev Limiters and Speed Governors are two different things for different functions. One prevents your engine from red lining and the othere prevents you from going too fast.
I also said that they work in conjunction. So what's your point?
Your little wiki prayer doesn't impress me. I've been building performance engines for 20+ years. You didn't even think the "trick" of chipping a G35 existed. Go learn some more than talk to me.
They are not two different things. An engine governor controls the RPMs, right? The Rev limiter is the SAME thing.
If they are two different things, prove it. Where is the "part" or the piece of the engine that limits the RPM? Modern cars have the combination of them both because the ECU knows what gear the car is in, thus limiting (or "governing") the RPM in 5th or 6th gear as well as limiting the engine from over-revving. You don't know what you are talking about. 
No, wait, you're not understanding. Let me explain in more detail. Also the Ford Governor you showed has been extinct and out dated for DECADES. LOL!
A speed governor will limit revs, but it will do it in one of two ways, one of which, the bad one, was on the 80s-90s Ford 5.0s. It will either start skipping sparks so only every other cylinder gets a spark or it will shut down the EFS (electronic Fuel supply) or it will shut down the spark all together (this is mostly an aftermarket performance type ignition, because avoiding the red line on performance engines is the utmost priority more so than on the stock car). The Fuel cut off one is horribad, because it will run an extremely lean fuel mixture for a period of time, which will cause a spike in temperature, that can and will warp aluminum heads. Either way, RPMs go down, car slows down.
Now, a Rev limiter on its own only starts skipping or delaying sparks when the revs get in the red, to prevent the damage I mentioned earlier. It has nothing to do with the cars actual speed, because the speed is controlled by the RPMs depending on the gear, which is monitored electronically by a trans mondule, also called a valve body inhibitor. Now, most cars in top gear, will reach the speed barrier long before the red line barrier, so it's the speed limiter that is limiting revs or activating the rev limiter. They are two very distinct and different mechanisms or functions that just have the same end result, that's why for the general bloke, it's just called an "Engine Governing System", which is BOTH the Rev Limiter/Governor and Speed Limiter/Governor.
The average performance enthusiast wants to remove the speed limiter, but NOT the rev limiter. Do understand that? The nice, easily removable and exchangeable ECM chip will do that.
The only one that doesn't know what he's talking about is you. The fact that you had to google that shit to find an outdated diagram and couldn't just explain it in a few words as well as saying chipping a G35 to get rid of the Speed Limiter is a nonexistant "Trick", proves you have no clue about this stuff.

LOL!