The term "bone house" typically refers to a mausoleum or burial place. However, there are several synonyms for this phrase that can convey the same meaning. One common alternative is "ossuary," which is a container or room that houses skeletal remains. Another word that can be used instead of "bone house" is "crypt," which is an underground vault typically used for burying the dead. "Sepulcher" is another option, referring to a tomb or grave, often displaying ornate decoration. "Necropolis" can also be used as a synonym, meaning a large and elaborate cemetery or burial ground. Each of these terms conveys the same idea and can be used interchangeably with "bone house".