Well, it's the same type of engine in that they are both turbofan engines. The Emirates 777-300 has RR Trent 892 engines while the JetBlue A321 has IAE V2533 engines. The Trent engine (75,000-93,500lbs thrust) has more than twice the thrust of the IAE engine (A5 variant used in the A321 has (31,300 or 33,00 lbs thrust) and is much larger in size. No commonality here other than they are both jet engines that had fire incidents.