Kyūjitai form of 王国 (“kingdom”)

kingdom (realm ruled by a king and/or queen) / (figuratively): kingdom (realm or conceptual space where something is dominant)

Europe and Asia, Eurasia

egg yolk

(monarchy) a "great king" (used in the titles of or as the term of address for some kings, and also as a translation of English "the Great")

calling out to each other; answering to someone calling out / agreement (of one word with another), going together of words / acting in concert; acting in harmony

call out to each other / agree, go together / act in concert with

traffic, coming and going / road / association / (historical) (pre-modern) textbook

come and go / associate

written request for employment etc.; application / enlistment in a military / response to an advertisement