We are sellers of building toys like LEGO online. But their website does not allow using the word "LEGO" directly to describe the products. Are there any other words that could describe the building sets like LEGO? It seems that LEGO is the representative of all kinds of building sets.
The answer can be closer than you think. Quoting from the Bricks help page:
Bricks is a question and answer site for LEGO and building block enthusiasts.
...actually it’s a highly sophisticated interlocking brick system