interior; inside; internal
satisfaction; contentment; sufficient; satisfactory; satisfying (an equation)
surveillance camera; security camera
equipment; device; installation; stage setting
rock (music); rock; boulder; on the rocks
existence or nonexistence; presence or absence; consent or refusal; yes or no
guard; security (officer); guardsman
staff member; employee; worker; personnel
way to use something; treatment; management (of help)
small fraction; small proportion
closely-guarded secret; top secret
attendance (on); chaperonage; attendant; escort; entourage
to suit the convenience of; to accommodate
painful; being sorry; feeling sorry
going in and out; entering and exiting; visiting regularly; frequenting; income and expenditure; incomings and outgoings; increase and decrease
minimum; at the very least
policy; course; plan (of action); magnetic needle
to slip out; to sneak away; to break into the lead; to get ahead; to begin to fall out (e.g. hair); to break out (of a loop)
running fast; double time; cantering; doing things in a hurry
tightrope walking; high-wire act; funambulism; treading a tightrope; walking on thin ice; pulling a risky balancing act
dramatic (improvement); remarkable (difference); marked; (far) better; exceptional
elevation; rise; improvement; advancement; progress
perception; sensation; awareness
to interlace; to fit together; to combine; to mingle
to sew; to stitch; to weave one's way (e.g. through a crowd)
gazing steadily at; observing (a person) closely; maintain a watch over
door; gate; opening; title page
incomplete understanding; doubt; question; distrust; suspicion; strangeness
to be affected; to put on airs; to act like (something one isn't); to pretend to be
orderly; regular; systematic; well-organized; well-organised; trim
signal; signalling; signaling; traffic light; traffic signal
pedestrian crossing; crosswalk
relation; connection; relevance
here and there; in twos and threes; sporadically; now and then; from time to time; occasionally
box; case; car (of a train, etc.); shamisen case; shamisen; public building; community building