Is USDC-E and USDC the same?

Could you please clarify if USDC-E and USDC are interchangeable or distinct entities? I'm trying to understand the nuances between the two and whether they serve similar purposes in the cryptocurrency and financial landscape. Would it be accurate to assume they are variations of the same stablecoin, or are there fundamental differences that distinguish them? Could you elaborate on the potential differences in their functionality, trading, and regulatory compliance, if any? Thank you for your assistance in clarifying this matter.