indicates sentence topic;  indicates contrast with another option (stated or unstated);  adds emphasis
 sky;  air;  ether;  firmament;  the heavens
 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
 at (place, time);  in;  to (direction, state);  toward;  for (purpose);  because of (reason);  for
 to attack;  to assail;  to succeed (someone in a post, role, etc.);  to make a sudden visit
 to come (spatially or temporally);  to approach;  to come back;  to do ... and come back;  to come to be;  to become
 eye;  eyeball;  eyesight;  sight;  look;  stare;  notice
 demon;  devil;  evil spirit;  -crazed person;  -obsessed person;  fiend
 to throw down;  to bring down;  to kill;  to defeat;  to overthrow;  to trip up
 to revive;  to come to oneself;  to be restored to life
 good;  advantage;  sake;  purpose;  consequence;  result
 Kamen Rider (TV series, the titular character)
 hero;  heroine;  Eroica Symphony (Beethoven, 1804);  Heroic Polonaise (Chopin)
 indicates direct object of action;  indicates subject of causative expression;  indicates an area traversed;  indicates time (period) over which action takes place;  indicates point of departure or separation of action;  indicates object of desire, like, hate, etc.
 to collect;  to assemble;  to gather
 obstruction;  check;  hindrance;  prevention;  impediment;  interdiction
 if;  when;  and;  with;  used for quoting (thoughts, speech, etc.);  promoted pawn;  indicates a question
 everyone;  everybody;  all;  everything;  all
 to join forces;  to cooperate
 to make war (on);  to wage war (against);  to compete (against);  to struggle (against adversities, etc.);  to fight
 have no choice;  there is nothing but;  no more than
 to leave (behind);  to leave (undone);  to not finish;  to save;  to set aside;  to leave (to someone, esp. after one's death)
 time;  hour;  period;  class
 behind;  rear;  after;  later;  remainder;  the rest;  more (e.g. five more minutes)
 twentieth day of the month;  twenty days
 force;  strength;  capability;  ability;  efficacy;  effect;  effort
 root;  source;  origin;  cause
 to;  for;  in order to;  for;  as for;  regarding
 concrete;  definite;  specific;  material;  substantial
 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.)
 good;  excellent;  sufficient;  enough;  profitable (deal, business offer, etc.);  beneficial
 that;  it;  then;  that point (in time); (arch.)  there; (arch.)  you
 will;  volition;  intention;  intent;  determination
 be;  is;  did;  (have) done;  please;  do
 emergency;  extraordinary;  unusual
 very interesting;  of great interest
 that;  the;  part (as in "part two");  um ...;  er ...