What is nor flash memory, nand flash memory, Flash memory storage

 MX29GL256 Series 3 V 256 Mb (32M x 8/16M x 16) 90 ns Parallel Flash - LFBGA-64

https://www.futureelectronics.com/p/semiconductors--memory--flash--norflash--nor/mx29gl256flxfi-90q-macronix-3014197