lying or sitting close to each other

tower / rook

hidden (of a place) / secret; clandestine / unobvious; hardly noticeable

consumed; with everything used up; exhausted

ideal (just as what one wants) / worthy of imitation

free; without charge; gratis / free of responsibility / safe / vacant; not working

abacus

rumor

Oman (a country in the Middle East)

no; not