involvement

be involved in, be engaged, enter the picture

important, significant

importance, consequence, significance

policy

decision / choice

to decide / to decide on; to choose

(historical) a major retainer / (historical) Same as だいじん (daijin) above

(politics, historical) a chief consul in the ancient Yamato court, equivalent to and replaced by 左大臣 (sadaijin) and 右大臣 (udaijin) during the Taika Reforms

(politics, historical, archaic) a senior minister or superior in the 太政官 (Ōimatsurigoto no Tsukasa, “Great Council of State”)