most, -est

(mineralogy, gems) a diamond

in addition; furthermore / on top of (which)

the above / the top (position or direction) / the surface of / superior in skill, age, level, etc.

minerals

Solid, hard, firm.

Keeping a material's shape that does not crack or break apart; hard / Keeping one's appearance or facial expression; serious

(astronomy, mythology) Earth; Terra

【Conjunction】after; on the basis of; upon

upper, over