hdd
AMOLED — Active-matrix organic light-emitting diode. AMOLED is a display technology used in portable devices like mobile phones.
Yes, AMOLED is a part of OLED only. Just that AMOLED are used only in mobile phones and cameras, whereas OLEDs are used by the TV manufacturers in making their OLED TV. I have even heard that LGs have unveiled their OLED TV in the recent CES and is planning to roll it out in the mid of this year.
Retina has a better screen resolution and more pixels, display is better on the Retina
LG Display
No, But there coming out with an ipad mini 2 soon with retina display
macboook pro retina display
Mostly. Note they both have the same retina display. The iPad with Retina Display has the A6X chip which does have better performance than A5X in New iPad.
Yes
LG
no
The Macbook Pro with Retina display does have an HDMI port. The Macbook Pro without Retina display do not have a HDMI port.