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)
 to become;  to get;  to result in;  to turn out;  to consist of;  to be composed of;  to be completed
 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
 truth;  reality;  sincerity;  honesty; (arch.)  that's right
 (one's) older brother;  young man;  sonny;  lad
 one person;  being alone;  being by oneself;  being single;  being unmarried;  by oneself
 the world;  society;  sphere;  circle;  world-renowned;  world-famous
 to face;  to go towards;  to head towards
 too;  also;  both A and B;  A as well as B;  even;  as much as
 companions;  friends;  comrades;  mates;  partners
 cooperation;  collaboration
 at;  in;  at;  when;  by;  with;  and then
 finally;  at last;  in the end;  after all;  never (happened)
 this;  last (couple of years, etc.);  these;  you (as in "you liar")
 somewhere;  anywhere;  in some respects
 indicates sentence subject (occasionally object);  indicates possessive (esp. in literary expressions);  but;  however;  regardless of;  whether (or not)
 Alan (member of an ancient Scythian people)
 deep sea;  depths of the sea;  ocean depths
 (one's) older brother;  lad;  sonny
 light;  illumination;  glow;  lamp;  light
 to be (of animate objects);  to exist;  to stay;  to be ...-ing;  to have been ...-ing
 to persevere;  to persist;  to insist that;  to stick to (one's opinion);  to remain in a place;  to stick to one's post
 going out (of a nobleman, etc.);  visiting
 first of all;  to begin with;  probably;  most likely;  more or less (satisfactory);  on the whole
 vigilance;  caution;  alertness;  precaution;  being on guard
 essential;  important;  crucial;  vital;  main