지구 （地球）：the Planet Earth
本(근본 본): (this one looks very unrelated so I'll copy-paste the meanings and hope for someone to clarify which one is used here)
- stem of plant
- hearts, nature
- Grass (unit to count vegetation)
- edition ( 版本 and 板本 )
- (units to count books)
- The principal ( 元金 ), main hall ( 本錢 )
- Honke ( 本clan )
- Agriculture ( 農業 ), agriculture ( 農事 ) 21 is based on ( 根據 -, base () 根據 spin a)
It may look unrelated, but it's 本. It means many things. Book is only a loose translation. Not too many generations ago it would have primarily meant a scroll, and so anything written, round cylindrical objects, correspondences, matters worthy of note, matters at hand, . . .
지구 [lit. ball of soil] = The (Planet) Earth or often referred to as "The Globe"*, with capital G.
- also been referred to as 세계 (the world, geographically speaking)
지구본 = a [본, version] model of the Earth (for geographical reference) referred to as "the globe" due to its spherical shape.
지구의, a synonym of 지구본 = [lit. The Earth tool. 의 is a translitaration of a Chinese word meaning thing/instrument etc. Not 의, the Korean possessive particle.]. It also means the globe.