preventive medicine;  prophylactic
 fall;  decline;  lowering;  deterioration;  degradation
 to defend against;  to protect against;  to prevent;  to avert;  to avoid
 life;  existence;  (one's) working life;  career;  life force;  lifeblood
 to rescue from;  to help out of;  to save
 progress;  advance;  improvement;  development
 walking;  pace;  step;  course (of history, one's life, etc.);  history;  pitch (of a screw, etc.)
 prefix for forming ordinal numbers
 to put in;  to let in;  to admit;  to accept;  to accept;  to comply;  to include
 via;  through;  by doing;  by means of;  using
 furthermore;  again;  after all;  more and more;  moreover;  even more
 critical (condition);  serious
 to protect;  to guard;  to defend;  to keep (i.e. a promise);  to abide (by the rules);  to observe
 called;  named;  as many as;  as much as;  all ...;  every single ...
 thinking;  thought;  idea;  notion;  intention;  plan
 year;  counter for years (e.g. of an era), grades (e.g. school);  period of an apprentice's contract (usu. ten years)
 (approximate) time;  around;  suitable time (or condition);  time of year;  season
 China;  Chūgoku region (western part of Honshu comprising the prefectures of Okayama, Hiroshima, Yamaguchi, Tottori and Shimane);  central part of a country;  main region;  province of the second lowest rank (ritsuryo system)
 to go upstream;  to go back (in time, to origin);  to date back to;  to trace back to
 ancient times;  distant past;  antiquity
 healer;  clinician;  physician;  person who gives treatment;  therapist
 for;  for the sake of;  to one's advantage;  because of;  as a result of
 to blow into;  to breathe into;  to inspire;  to indoctrinate;  to record (music, video, etc.)
 United Kingdom;  Britain;  Great Britain
 this;  last (couple of years, etc.);  these;  you (as in "you liar")
 technology;  engineering;  technique;  skill;  art;  craft
 (a) step;  one step;  level;  stage;  small degree;  small amount
 to advance;  to move forward;  to carry forward (plans, work, etc.);  to proceed with;  to raise;  to elevate
 close relation (association)
 to be (in contrast to something that is not the case)
 comparatively;  relatively
 action;  operation;  effect;  function
 few;  a little;  scarce;  insufficient;  seldom