NAND Flash vs NAND EEPROM
The headline differences appear to be:


Micron device is "Open NAND Flash Interface (ONFI) 1.0-compliant" while the Toshiba isn't.
Different page sizes: Micron "x8: 2,112 bytes (2,048 + 64 bytes)" vs Toshiba (2048 + 128). The extra bits are for user-defined tagging and error recovery.