Kansha is shrines that receive hohei (offering a wand with hemp and paper streamers to a Shinto god) from the country at Kinen-sai Festival (prayer service for a good crop) and Niiname-sai Festival (ceremonial offering by the Emperor of newly-harvested rice to the gods).
官社とは、祈年祭・新嘗祭に国から奉幣を受ける神社である。