BLOB is a Binary large Object. We can store a large amount of binary data in a BLOB data type column. TEXT is non-binary, character based string data type. We can store text data in TEXT column. We have to define a character set with a TEXT column. TEXT can be easily converted into plain text.
BLOB has four types: TINYBLOB, BLOB, MEDIUMBLOB and LONGBLOB. Where as, TEXT has its own four types: TINYTEXT, TEXT, MEDIUMTEXT, LONGTEXT.