"Sabre saw" is only used for this kind of tool, "jig saw" in the last few decades is coming to be used this way but before was the stationary tool, and "scroll saw" is used only for the stationary one. Not to be confusing with an auto-scrolling jig/sabresaw.
Both of those blades are for a sabre/jig saw. Sometimes companies use different names in weird ways. I'd guess the one with two holes is so older saws with a different setscrew can use them.
The stationary tool blades are like coping saw blades.
GTO(John)