Mitamashiro, yorishiro, and shiro all refer to substitutes (that can be honored in place of spirits or gods), and are used to describe all objects--except for those already mentioned--in which gods come to dwell temporarily.
御霊代（みたましろ）依り代（よりしろ）代（しろ）とは代わりであり、上記のほか神が一時的に降りる（宿る）器としての森羅万象を対象とした場所や物をさす。