Is ERC 20 the same as ETH?

I've been hearing a lot about ERC 20 and ETH in the context of cryptocurrency, but I'm still a bit hazy on the distinction between them. Could you clarify for me if ERC 20 and ETH are interchangeable terms, or if they refer to distinct concepts within the realm of digital currencies? If they're not the same, could you explain the fundamental differences between them? I'm trying to wrap my head around the intricacies of this field, and your insight would be invaluable." As a cryptocurrency enthusiast, I'm eager to understand the nuances of this rapidly evolving industry. Your expertise in this area would greatly assist me in navigating this complex landscape and gaining a deeper understanding of ERC 20 and ETH. Thank you for your time and consideration.