I'd try to explain Ethereum like this;

Bitcoin uses Blockchain-tech to provide a currency.
The blockchain-tech is so friggin genius made and is suitable for WAY more then just keep track of a currency/value.

Ethereum uses this tech to provide much more then a coin/value. Its somewhat a genius move, but cryoto/blockchain could be even more then this.


Like Stealthcoin said; There is a major risk with a currency under Ethereum.
Even though I doubt the idea and concept of Ethereum, but this kind of development is exactly what Crypto needs!

-Grg