Found is the bounce which you get by the ROC, with which you can cooperate in any contract, or can get income from each part of the platform. You can withdraw it according to the rules of the company but it is not transferable and you cannot directly cooperate with found in contracts or algorithms.
You can exchange and convert your found to chip and with chips, you can have an algorithm and cooperate in contracts and use also as bonus in another phases. Chips are transferable but you cannot withdraw it, neither can you convert chip to the found. That means the chip is just for the platform.