Is IOTA the same as MIOTA?

Could you elaborate on the similarities and differences between IOTA and MIOTA? I've heard these terms used interchangeably, but I'm curious if there's a distinct distinction between them. Is IOTA the overarching network or ecosystem, while MIOTA refers to a specific unit of measurement within that network? Or are they effectively the same thing, just used in different contexts? Clarifying this distinction would be extremely valuable for understanding the intricacies of cryptocurrency and its various components.