Yeah, it's really not complicated, I'm getting annoyed by all the Dutch people mixing everything up and saying how confusing it is...it's not
1. The virus is a coronavirus, one of many.
2. It's a new - or, novel - coronavirus, hence the original temporary name of 2019-nCoV.
3. That virus got it's more final name of SARS-CoV-2 after the needed research to see what it does.
4. The disease caused by SARS-CoV-2 was called COVID-19, of which you explained the abbreviation already.
How can this be complicated for so many people in this country?