霊屋

Etymology 1
Compound of. First appears in the 1000s.

The term appears to be a shift in usage from the earlier terms and  seen in the  of 720.

Noun

 * 1)  a shrine dedicated to a specific individual
 * 2)  a place where the remains of the dead are kept temporarily during a period of mourning, prior to burial at a formal funeral
 * 3)  a roof placed over a grave, sometimes built to shelter offerings, incense, and the like from the elements
 * 1)  a place where the remains of the dead are kept temporarily during a period of mourning, prior to burial at a formal funeral
 * 2)  a roof placed over a grave, sometimes built to shelter offerings, incense, and the like from the elements
 * 1)  a roof placed over a grave, sometimes built to shelter offerings, incense, and the like from the elements

Etymology 2
Likely from.

Noun

 * 1)  a shrine dedicated to a specific individual