tragedy (type of theatrical work) / tragedy (event causing great suffering)

Nagasaki as atomic bombed place

atomic bomb

dropping from a height / investment

to drop from a height / to invest

earth, dirt / fabric, cloth / (game of Go) territory

a colony (region or governmental unit)

earth, land, ground / a place, a region, a piece of land / territory, dominion / (of a crate, etc.) the bottom / (printing, of a page) the bottom margin

earth; ground

the ground / earth, dirt, mud, soil / the earth (as opposed to the heavens) / the ground or bottom of something (as of a price range)