An iPhone is a line of cell phones made by Apple. There are various models.
An iPod is a line of mp3-players made by Apple. There are various models.
You'll find more info on the makers site (www.apple.com). Or find your nearest AT&T (for the iPhone) or Apple (for the iPod also) shop. iPods also are sold by many high street and Internet shops.
Can anyone tell me briefly exactly what an iphone and ipod are? Thank you. user470