Tenpo (aka Tenpu) refers to what the Edo bakufu (Japanese feudal government headed by the seii taishogun [literally, "great general who subdues the barbarians"]) changed daimyo's (Japanese feudal lord) territories to different locations.
転封（てんぽう、てんぷう）は江戸幕府（征夷大将軍）が、大名の領土を別の場所に移すこと。