天元: The point at the center of the board in the game of go.

(historical, government) the third rank among the 四等官 (Shitōkan, “Four Ranks”), a system ranking and entitling officials under the 律令 (Ritsuryō); this is the most generic spelling; for each departm...

rise and fall (of the Roman Empire etc.)

素早い: fast, agile / quick to understand