By mentioning pin compatibility I refer to the following:
Arduino Mega SPI digital I/O pins:
MISO-pin 50
MOSI-pin 51
SCK- Pin 52
SS- pin 53
Arduino Uno SPI digital I/O pins:
MISO-pin11
MOSI-pin12
SCK-pin13
SS-pin10
Do these digital pins show compatibility with each other? Or with only ICSP pins we can achieve SPI communication betweemn UNO and Mega?