According to the Cook's Thesaurus these are all the same cut of meat.
And, it looks like this.
You know, nomenclature is a funny thing. Seems every butcher, baker and candlestick maker...ok, maybe not the last two, call their cuts something different.
You can't tell the players without a scorecard.
Luckily, we have not one, but two!
First, you can head to the Cook's Thesaurus. Bring a copy of that page to the grocer and you can speak meat. Next, head to Burlington Meats and Catering and double click on the chart to get a HUGE Pork Cut Map. Or, click HERE for the humongo size.
Check the chart for the recommended methods for cooking each cut. Now, if you've been doing this a while, this may be old hat. But, if the "economic downturn" has you buying cuts of meat you have never chosen before, hopefully this will help.
Oh, and if you need a similar Retail Cut chart for beef, and lamb, and...other critters, simply type Beef Cuts into Google Images. And, the world will be your oyster...or at least, your critter.