manipulation (as in a device) / manipulation (as in a person): deception, taking someone in / getting on someone's right side; humoring someone; an effort to please someone

indicates machines / indicates airplanes

mechanism / machine / airplane / opportunity

Kyūjitai form of 空気: air, atmosphere; atmosphere, mood

altitude

empty box

clear sky

aerial photography

to heat empty cookware (as when forgetting to put water in a kettle, pot, etc.); to dry heat cookware

heating empty cookware (as when forgetting to put water in a kettle, pot, etc.); dry heating cookware