What are the differences between the Omicron and Delta COVID variants?

What are the differences between the Omicron and Delta COVID variants?

“Omicron will displace delta as the dominant variant, just as delta replaced alpha. I think that’s pretty certain,” said Andrew Noymer, a University of California, Irvine epidemiologist and demographer who studies infectious diseases. … “I have no doubt omicron is more transmissible than delta,” Noymer said.