Volatility is the price fluctuation of a tradeable asset. Cryptocurrencies, like Bitcoin, are volatile. For instance, Bitcoin’s price has fluctuated between a low of ~$29,800 to a high of about ~$67,600.
Ethereum is the second most common cryptocurrency to invest in, with about 19.5% market share. Although Ethereum is a cryptocurrency, it is not the same as Bitcoin and targets a different market niche.