the world;  society;  sphere;  circle;  world-renowned;  world-famous
 indicates sentence topic;  indicates contrast with another option (stated or unstated);  adds emphasis
 riddle;  puzzle;  enigma;  enigmatic;  mysterious
 at (place, time);  in;  to (direction, state);  toward;  for (purpose);  because of (reason);  for
 to fill;  to become full (of);  to wax (of the moon);  to rise (of the tide);  to flow;  to expire (of a period of time)
 indicates possessive;  nominalizes verbs and adjectives;  substitutes for "ga" in subordinate phrases;  (at sentence-end, falling tone) indicates a confident conclusion;  (at sentence-end) indicates emotional emphasis;  (at sentence-end, rising tone) indicates question
 sky;  the air;  weather;  far-off place;  distant place;  state of mind;  feeling
 beyond;  across;  the other side;  the distance
 inner part;  inside;  interior;  depths (e.g. of a forest);  back (of a house, drawer, etc.);  bottom (e.g. of one's heart)
 historic ruins (remains, relics);  archeological site
 treasure house;  storage for valuable property
 source (e.g. of a river);  headwaters;  origin of something continuous (language, culture, etc.)
 no;  nay;  well;  er;  you're welcome;  not at all
 go that far;  to that extent
 to go;  to move (in a direction or towards a specific location);  to proceed;  to take place;  to pass through;  to come and go;  to walk
 too;  also;  both A and B;  A as well as B;  even;  as much as
 neighboring town;  neighbouring town;  adjacent town
 ruins (of a building, town, etc.);  remains
 mountain (or hill) behind a house, village, etc.;  side of a mountain that gets little sunshine;  envious;  jealous
 cavern;  cave;  cave system;  grotto
 school building;  schoolhouse
 to open;  to undo;  to bloom;  to unfold;  to open (for business, e.g. in the morning);  to be wide (gap, etc.);  to widen
 door;  gate;  opening;  title page
 up through;  up until;  down to;  from ... to ... (e.g. from head to toe);  everything from ... to ...
 here and there;  all around;  everywhere;  to get things in the wrong order (back to front);  to become muddled up
 not yet known;  unknown;  strange
 uncivilized;  uncivilised;  undeveloped (land);  unexplored (territory, field, etc.);  unbloomed (flower)
 place;  location;  room;  space;  basho;  wrestling tournament
 indicates sentence subject (occasionally object);  indicates possessive (esp. in literary expressions);  but;  however;  regardless of;  whether (or not)
 question (e.g. on a test);  problem;  problem (e.g. societal, political);  question;  question (i.e. doubt);  public discussion
 what;  how many;  many;  a lot of;  several;  a few
 information;  news;  intelligence;  information;  data contained in characters, signals, code, etc.
 nonexistent;  not being (there);  unowned;  not had;  unique;  not;  impossible
 plot of land;  lot;  soil;  locality;  region;  place
 before one's eyes;  in front of one;  under one's nose;  immediate;  imminent;  around the corner
 to spread (out);  to extend;  to stretch;  to reach to;  to get around;  to fill (e.g. a space)
 time;  hour;  occasion;  case;  chance;  opportunity
 person;  someone;  human beings;  mankind;  human (Homo sapiens);  (other) people;  others
 how;  in what way;  how about
 to do;  to carry out;  to cause to become;  to make (into);  to serve as;  to act as;  to wear (clothes, a facial expression, etc.)
 desperately;  recklessly;  rush headlong
 to push on;  to plunge forward;  to push one's way to
 vigilance;  caution;  alertness;  precaution;  being on guard