Clone brand
From Brickwiki
Clone brands are bricks made by companies other than LEGO but designed to be compatible with some or all aspects of the system of play. As a general rule clone brands are cheaper but of poorer quality plastic and moulding than genuine LEGO bricks.
Some clone brands are blatant copies of LEGO sets and some companies have been prosecuted for intellectual property violations for their imitations.
Most AFOLs prefer genuine LEGO brand bricks and it is one of the purist characteristics.

