to live;  to exist;  to make a living;  to subsist;  to be in effect;  to be in use
 even if;  even though;  however;  no matter how
 to mind;  to care about;  to be an issue;  to matter;  to keep company;  to care for;  to interfere with
 in good health;  alive and well;  going strong
 sky;  the skies;  high-altitude sky;  upper air
 descent;  fall;  drop;  passing down (of an order, decree, etc.)
 medium;  average;  moderation;  middle school;  China;  volume two (of three);  during (a certain time when one did or is doing something)
 all;  whole;  entire;  complete (set);  in total
 defense;  defence;  safeguard;  protection
 shift;  move;  (work) shift;  work schedule;  gearshift;  changing gears
 one's junior;  younger generation;  next generation;  moving backwards;  backing up;  reversing
 gravity;  gravitation;  gravitational pull
 control (of a machine, device, etc.);  control (over an opponent, one's emotions, etc.);  governing;  management
 independence;  self-reliance
 action;  movements;  motions;  bearing;  behaviour;  behavior
 remote control;  remote operation
 strangeness;  abnormality;  disorder
 without;  unacceptable;  not alright;  unsatisfactory
 urban areas;  the streets;  town;  city
 clear;  clearing (a bar, hurdle, etc.);  overcoming;  getting through;  clearing (the ball);  clearing (e.g. a checked box)
 surface of the earth;  ground surface
 core;  core;  hardcore;  all-out
 action of making something;  -ification
 state of affairs (around you);  situation;  circumstances
 six;  sixth (interval, chord)
 love;  affection;  attachment;  craving;  agape;  Ireland
 confirmation;  verification;  validation;  review;  check;  affirmation
 tactics;  strategy;  military operation;  naval operation
 start;  commencement;  beginning;  initiation
 point (of a story, argument, etc.);  point (e.g. in stock exchange movement);  percentage point;  switch;  points;  point;  site
 reaching;  attaining;  arrival
 comprehension;  consent;  understanding;  OK;  roger (on two-way radio)
 vigilance;  caution;  alertness;  precaution;  being on guard
 development;  evolution;  expansion;  spreading out;  expansion (of an algebraic expression);  development (of a three-dimensional shape)