Is the SS Stovetop Espresso Maker what's called a Moka pot? They haven't named it explicitly a Moka pot, hence the question.
If not, can a Moka pot style coffee be prepared in that instrument?
Yes, It's a Moka Pot. Despite the name, you can't prepare espresso coffee in that pot.
The coffee that you can prepare with the Moka pot is not even close to an Espresso. The pressure is key to extract the coffe aroma and to produce the cream. The Espresso requires 7 grams of coffee powder and high pressure 90°C water to produce 25ml coffe (cream included). There's no way to do such a thing with a Moka pot.
With a Moka pot, you will get a coffee, which is not Expresso but is also a coffe which is widely drink in Italy (at home, usually). It's different from Espresso but, in my opinion, good. It has it's own taste. The closest thing to an Espresso you can get, if you woUld like to go that way, is a small amount of coffee, but you won't get the same flavour, nor the density.
Yes, the term "Stovetop Espresso Maker" and "Moka Pot" are interchangeable. The "Stainless Steel Stovetop Espresso Maker" shown at the link you have provided functions exactly like Moka pots from any number of manufacturers.
As others have discussed, the coffee that you can prepare with the Moka pot is not, technically, espresso because this type of coffee pot cannot produce the required pressure for espresso style extraction. By definition, espresso requires 9 bar of pressure and 90˚C water. A Moka pot produces only about 1.5 bar of pressure with water just above 100˚C.
Moka pots are used in Italy and throughout Latin America to will to produce a concentrated coffee at home. This type of coffee has it's own flavor, aroma, and density. They make a full-bodied but bitter coffee, often mixed with milk. Depending on the bean type, roast, and grind they may also produce some crema. It is one of the closest coffees to an espresso you can get at home without spending a lot of money for an actual espresso machine.