The concept of chips is used in most offline casinos and online portals, but it may imply different elements.
Chip – a small token that replaces money in gambling. Most often it has round shape, but also happens to be square or octagonal.
Some chips can be cashed at the box office, and some designed for use at a specific table. At the end of the game there you need to change for valuable chips.
The so-called lucky chips can only be used as a bet. Payments are made with ordinary chips.