Is XLM the same as Stellar?

I've been hearing a lot about cryptocurrencies lately, and I'm particularly interested in Stellar. But, I've also come across the term XLM quite frequently. This got me wondering: Is XLM the same as Stellar? Are they interchangeable terms, or do they represent different aspects of the same concept? Could you clarify this for me? I'm trying to understand the nuances of the cryptocurrency world, and this seems like a fundamental question to ask.