What are mass extinction and background extinction different?

Extinction is the complete disappearance of a species from life. No more of that species is alive on the planet. It happens all the time; the normal rate of extinctions is called the background...

A background extinction is the continuous extinction of individual species caused by climate change, disease, loss of habitat, and competitive disadvantages against other species. Background...

When large numbers of species die out in a very short period of time.

Both involve at least a few species dying out because of failure to adapt to the changing environment.

they r related by having the same family blood