necessity (quality or state of being necessary, unavoidable, or absolutely requisite)

glue / isinglass

(poetic) a frog (amphibious animal) / (Noh theater) a specific mask used in certain Noh plays, depicting a drowned person

give an answer / solve

Riverbank.

Clipping of 安康天皇 (Ankō Tennō, “Emperor Ankō”).

reclamation of land, cultivation of farmland, development of resources / exploration

reclaim, cultivate, develop / explore

Incheon (a city in South Korea)

assistant in wine shop / groom (keeper of domestic animals)