There are at least five 'proper' coins
(and probably hundreds of tokens or medallions)
2007 Cook Islands 5 Dollars - That's All Right
2007 Cook Islands 5 Dollars - Love Me Tender
1996 Gibraltar 1 Crown - Centenary of the Cinema Series
1993 Marshall Islands 5 Dollars - Commemorative
1993 São Tomé and Príncipe 500 Dobras - Commemorative
5 coins and 5 coins
all of them.
Notes: 7 Coins: 5
If you toss eight coins, there are 256 (28) different outcomes.
Coins have different weights, so it depends on what kind of coins you're using.
Many different metals.
-- 8 possibilities if the coins are different colors. -- Only 4 possibilities if you can't tell the coins apart.
Different countries have different systems of coinage so without knowing which country the question is about, it is not possible to answer the question.
The answer will depend on the country whose dollar you mean. Different countries, that use dollar, have coins of different denominations.
263 ways
Countries all over the world, past and present, have been producing coins for thousands of years. There would be millions of different types of coins.
Two coins issued Cross = 12,087,000 Soldier = 10,000,500 Circulation coins; different for proof issues