hertz (unit of frequency);  Hz;  heart
 to decrease (in size or number);  to diminish;  to abate
 bell (used for summoning or signalling);  buzzer
 to come out;  to appear;  to turn up;  to emerge
 key;  lock;  key (to a problem);  clue
 to peek (through a keyhole, gap, etc.);  to look down into (a ravine, etc.);  to peek into (a shop, bookstore, etc.);  to sneak a look at;  to take a quick look at;  to peep (through a telescope, microscope, etc.);  to stick out (a scarf from a collar, etc.)
 light;  illumination;  glow;  lamp;  light
 rubbish;  trash;  garbage;  refuse
 journal;  magazine;  periodical
 to collapse;  to crumble;  to get out of shape;  to lose one's shape;  to break down;  to be thrown into disarray;  to crash (stock market)
 instant noodles sold in a cup;  cup noodles
 to lose composure;  to be upset;  to be flurried;  to lose one's head (through shock)
 the best one can do;  one's best effort;  with all one's might;  to the best of one's ability
 to lay waste;  to devastate;  to invade;  to break into;  to troll (e.g. web forums);  to spam
 to curse;  to put a curse on;  to detest intensely
 do, re, mi (solfa syllables)
 to be heard;  to be audible;  to be said to be;  to be reputed
 bell (often a large hanging bell);  chime
 ancestor;  forefather;  originator;  pioneer;  grandfather
 of no use whatsoever;  good for nothing;  useless
 on the contrary;  far from it;  if anything;  in fact;  instead
 standard;  basis;  criterion;  norm;  reference;  datum
 to slide;  to slip off;  to get dislocated;  to be out of alignment;  to get dislodged;  to deviate
 bad feeling;  feeling bad;  disagreeable;  unpleasant;  revolting;  gross
 unskillful;  poor;  awkward;  imprudent;  untactful
 to hang over;  to cover;  to lie over;  to fall on one's shoulders;  to become one's responsibility;  to become a burden
 graduation;  completion (of a course);  moving on (from);  outgrowing (something);  leaving (a group, company, etc.)
 concentration;  focusing;  convergence;  within a collection of works
 mere consolation;  temporary peace of mind
 noise (usu. unpleasant);  interference (e.g. radio);  static;  gossip;  irresponsible criticism
 railway crossing;  railroad crossing;  starting line;  scratch;  determination;  stepping over the edge of the ring
 sharp (blade, image, mind, etc.);  sharp;  number sign;  hash sign;  mechanical pencil
 one-by-one;  separately;  in detail
 many times over;  often;  repeatedly;  time after time
 poor physical health;  bad shape