I was the one that said they were different, and Apollonian summed up the difference.
I'm an outgoing introvert. I used to be shy. Actually, I was just told I was shy, but thinking back, I don't think I was. I just didn't talk to many people - I felt no need to. *shrug* It just wasn't high on my list of priorities to be "out there" and talk to every person I saw. I like being with people. I have great fun at parties. But they drain me. After a bout of being social, I need my time to recharge. Extroverts, as I understand them (and I don't, not really, but bear with me) are charged by being with people. And most of them don't understand why an introvert might just not feel like going out or even talking. I think introversion gets confused with shyness.
Quick story - my college choir went on tour for a week every spring - 30 or so people on a bus for many hours a day. I know how I get in situations like that, and old people ahead of time that if I kept to myself sometimes, it wasn't about them, just that I get frustrated in those situations - it's chaotic to me. Inevitably, someone would come over to my seat, try to start talking, and I'd gently tell them I needed my alone time at the moment, but I'd ind them later. And inevitably, they'd pressure me, I'd reiterate that I'd find them when I was feeling more social, they'd press more, and ultimately I'd snap something like, "I SAID I'd find you later - I need to be alone right now!" And of course, they'd get all mad. I was always incredulous - I'd told them beforehand and at the time that I needed to be alone, and they pressed the issue, then were surprised and angry when I got upset with them. *shakes head*
Some of my college friends didn't understand that sometimes I just didn't feel like going out, and when get huffy because they thought I didn't want to spend time with them, when it wasn't that at all.
But when I'm not seeking solitude, I can roll with the rest of them. I need some time to warm up at a party, but once I get going . . . .
That's another differnce I notice - the extroverts I know rarely seek solitude - it frustrates them.