What is the difference between SARS coronavirus, SARS coronavirus 2, SARS-related coronavirus, and SARS-like coronavirus?

• SARS-related coronavirus (SARS-related CoV) is a species of coronavirus in the sub-genus Sarbecovirus. SARS-related CoV includes SARS coronavirus (SARS-CoV), SARS coronavirus 2 (SARS-CoV-2), and bat SARS coronaviruses.

• SARS-CoV is the specific virus responsible for Severe Acute Respiratory Syndrome, which was identified in 2003. 

• SARS-CoV-2 is the virus responsible for COVID-19 (aka,Wuhan atypical Pneumonia). It was previously known as 2019 Novel coronavirus (2019-nCov), or Wuhan Virus.