Page "Flash memory" Paragraph 4

Although flash memory is technically a type of EEPROM, the term " EEPROM " is generally used to refer specifically to non-flash EEPROM which is erasable in small blocks, typically bytes.

Because erase cycles are slow, the large block sizes used in flash memory erasing give it a significant speed advantage over old-style EEPROM when writing large amounts of data.

Flash memory now costs far less than byte-programmable EEPROM and has become the dominant memory type wherever a significant amount of non-volatile, solid state storage is needed.