Answer:
The black plague killed more people than corona, there was not a vaccine for the black plague and there is one for corona, corona has a lower mortality rate than the black plague.
Step-by-step explanation:
The black plague killed 1/3 of Europe while corona killed 1% of people who contracted the virus. Back when the plague was a thing, penicillin did not exist to stop the infection but today there are vaccines, the plague killed more people.