Is a shed blade the same as what I call an undercoat rake??

My two youngest think it is great fun to chase and "kill" the "critters" I pull off the rake...especially if I toss the clumps in the air and it gets caught in a light breeze. When they are done, they spit the clumps of hair out in slimey wads (eeewww!)....

Sometimes I get creative, and will brush Scarf (almost completely black GSD), then Pharlap (even though his gaurd hairs are black, his undercoat is off-white), then Scarf again, and when I pull the "critter" off the rake, it looks like a skunk, with an off-white stripe going down the middle!!