The similarities between the genocides would be that the an entire race or section of people were killed.
The differences would lie in the reason they were killed. The reason for the holocaust was to wipe out the world population of Jews hence it was religiously motivated.
The reason for the Rwandan genocide was to kill and exterminate a particular tribe.
Read more on genocide here:
https://brainly.com/question/26846770
#SPJ1