origin;  source;  base;  basis;  cause;  ingredient;  material
 tenant (usu. office block, shopping center, etc.)
 counter for buildings (esp. houses);  suffix for a pen name, stage name, etc.
 storey;  story;  stairs;  stage (in chronostratigraphy);  counter for storeys and floors of a building
 to;  for;  in order to;  for;  as for;  regarding
 nursery school;  day nursery;  preschool
 to enter;  to go into;  to break into;  to join;  to enroll;  to contain;  to hold
 gas (state of matter, e.g. poison gas, natural gas);  gasoline;  gas;  dense fog;  thick fog;  gas stove
 once;  one time;  temporarily;  for a moment;  one degree;  one tone
 explosion;  detonation;  eruption;  eruption (of discontent, etc.);  outburst;  outpouring
 to get up;  to rise;  to wake up;  to be awake;  to occur (usu. of unfavourable incidents);  to happen
 multi-floor building;  multi-storey building;  bill
 cornerstone;  main point;  requirement;  need;  necessary;  required
 person;  -er; (arch.)  expert; (arch.)  geisha; (arch.)  prostitute
 the number of people;  many people;  a large number of people;  (counted as an) adult
 grasp;  catch;  understanding
 rescue;  extricate;  reclaim;  deliverance
 course;  route;  path;  process;  means
 state of affairs (around you);  situation;  circumstances
 emergency staircase;  emergency stairs
 to use (a thing, method, etc.);  to make use of;  to use (a person, animal, puppet, etc.);  to employ;  to use (time, money, etc.);  to spend
 hook-and-ladder truck;  ladder truck
 upon arrival of an item (items);  as soon as one arrives
 urgent;  pressing;  immediate;  urgently;  promptly;  at once
 start;  commencement;  beginning;  initiation
 island;  one's territory (e.g. of a sex worker, organized crime gang);  one's turf
 group;  party;  team;  squad;  section
 at once;  immediately;  without delay;  promptly
 retirement;  retiring (from a race, match, etc.);  dropping out
 may;  might;  perhaps;  may be;  possibly
 yes;  indeed;  ha!;  what?;  huh?;  sigh
 arrival on location (esp. used in transport industries, police, etc.)
 comprehension;  consent;  understanding;  OK;  roger (on two-way radio)
 later on;  eventually;  afterwards
 understood;  I see;  OK;  present;  here
 there;  over there;  genitals;  private parts;  that far;  that much
 that child;  that kid;  that boy; (arch.)  you