やくにたつ
to be useful
やくわり
role, part
やく
role, position
じゅうやく
director, high executive
しゅやく
leading part
やくしゃ
actor
やくしょ
government office, public office
やくにん
government official
やくめ
duty, business
やくしょく
post, managerial position, official position
やくば
town hall