As Easter and Good Friday are parts of the same multi-day uber-holiday, you really can’t.
Maundy Thursday – Last Supper
Good Friday – Crucifixion of Christ
non-holiday Saturday – Burial of Christ
Easter Sunday – Resurrection of Christ
A four-day event.
It should be noted that many Pagan religions had/have a celebration of rebirth around the Spring Equinox as well, often a multi-day one. Most of them celebrate the rebirth of the planet as life returns following a barren winter though; they don’t have a literal return from the dead the way Jesus allegedly came back. And rabbits play into the whole Easter/Ostara holiday as symbols of fertility.
We didn’t really call it anything; we just took a few nameless days off around that time.