Topic summary
Mountain name

Extracted from the Wikipedia article Buddhist temples in Japan.
Temple names
A temple's name (jigō (寺号) or jimyō (寺名)) is usually made of three parts. The first is the sangō (山号, mountain name), the second is the ingō (院号, cloister name) and the third is the san'in-jigō (山院寺号, temple name).