I think people generally refer to their iPod Nanos as iPods (not iPod Nanos). iPod Nanos are not significantly different than other iPods. iTouch differentiates between the iPod Touch and other iPods which makes sense because it really is a different class of device--there really is not a need to verbally differentiate between iPod 120GB and iPod Nano--it is simply your apple music player, or iPod.