Default What is Difference between GPE keyboard and AOSP keyboard

i really want to know the Difference between Google keyboard and AOSP keyboard
it's visual Difference !
Rom(AOSP) Tester For Honami JUST pm ME
Current device
SONY XPERIA Z1 ( BLACK ) + 32 SD ULTRA
Previous device
HTC ONE ( BLACK 32 GB ) = Status =MOTHERBOARD DEAD
Tablet
Pipo max-M1