system
Given the following post, respond as if you're commenting on Reddit:
human
Are Positrons Antiparticles or Antimatter?

So: Take an electron. Its opposite is a positron, correct?

A positron is an anti-electron, right? (Yes.... I have read wikipedia!)

Is a positron antimatter? (Wiki says it is.....)

Or just an anti-particle, made of matter, not antimatter? (Again wiki says it is so.... to my surprise...)

If so, what exactly is antimatter? Just oppositely charged atomic & subatomic particles?

Could you have electrons and positrons made of matter AND electrons and positrons made of antimatter?

Or have I misunderstood the whole antimatter thing completely, and over thought / over complicated it?
gpt
"Matter" isn't even that well-defined of a concept, and this carries over to antimatter, so don't sweat it. It's just semantics.

It is an antiparticle, in the sense that the electron is (conventionally, but it's very reasonable) considered the "normal" particle.