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
 light;  illumination;  glow;  lamp;  light
 teacher;  instructor;  sensei;  title or form of address for a teacher, master, doctor, lawyer, etc.;  intimate or teasing form of address; (arch.)  one's elder
 to save;  to rescue;  to help;  to assist;  to support (financially);  to contribute (to)
 the world;  society;  sphere;  circle;  world-renowned;  world-famous
 to board;  to embark on;  to get into (a car);  to march into;  to enter
 opponent;  rival;  adversary;  menace;  danger;  threat
 snare;  trap (for catching wild game, etc.);  trap (i.e. ruse, subterfuge, etc.)
 to fit;  to get into;  to be fit for (a job, etc.);  to be suited for;  to fall into;  to plunge into
 to finish;  to stop;  to close (a business, etc.);  to close down;  to put away;  to put back
 new;  novel;  fresh;  recent;  latest;  up-to-date
 force;  strength;  capability;  ability;  efficacy;  effect;  effort
 doesn't amount to doing (something);  not significant enough to require (something);  unnecessary
 here;  this place;  this point;  here;  these past ... (e.g. three years);  these last ...
 at;  in;  at;  when;  by;  with;  and then
 appearing ...;  looking ...;  way to ...;  method of ...ing;  form;  style
 right?;  isn't it?;  hey;  say;  you know;  you see;  will you?
 to believe;  to believe in;  to place trust in;  to confide in;  to have faith in
 infinity;  infinitude;  eternity;  infinite;  limitless
 potentiality;  likelihood;  possibility;  availability
 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