The following are the Coins and Notes / Bills in Chile:
Chilean Coins: $1 - $5 - $10 - $50 - $100 - $500
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Chilean Notes/Bills: $1,000 - $2,000 - $5,000 - $10,000 - $20,000 - ($500*)
*There is the odd $500 note floating around but most of the time you will see the coin version.
In local Chilean slang (especially with the young people), the $100 peso coin is called 'una gamba' and $1000 is called 'una luca'. You can use multiples of Luca e.g. $8000 = 8 luca(s) The final 's' is not often pronounced. When you have one million pesos, it is usually called 'un palo' or 'un guatón'.
By the way, don't pay the bus drivers with anything less than a $10 coin as they will often throw them out the window while looking at you in disgust. Also, don't pay the bus driver with anything larger than a $2000 note unless you are paying for more than 3 people. The $1 and $5 peso coins are quite worthless in Chile. The only use they have is to fill up a jar or bottle for decoration.