pains;  hard work;  effort;  trouble;  labour;  labor
 meticulous;  careful;  discreet;  scrupulous;  prudent
 admiration;  being impressed;  admirable;  praiseworthy;  astonishment;  being appalled
 center;  centre;  middle;  -centered;  -centred;  -focused
 center of the earth;  centre of the earth
 timidity;  cowardice;  prudence;  pedantry
 innocence;  insentient (i.e. plants, inanimate objects, etc.);  free from obstructive thoughts;  to pester someone (for cash, etc.)
 human nature;  human heart;  human spirit;  public feeling;  people's sentiments
 congeniality;  satisfaction;  gratification
 bottom of one's heart;  depths of one's mind;  innermost thoughts;  real intentions
 inner thoughts;  real intention;  at heart;  deep down;  inner center (centre)
 double suicide;  lovers' suicide
 wicked heart;  evil design
 aspiration for Buddhahood
 open-minded;  receptive;  free from preconceived ideas
 spirit (e.g. human spirit);  soul;  spirit;  ghost;  ethereal being
 mental;  psychological;  physical
 core;  heart (of the matter);  point;  crux;  kernel
 undivided attention;  concentration
 center of a lake (centre);  middle of a lake
 bar (e.g. on a door);  bolt
 true feelings;  real intention;  one's heart;  one's right mind;  one's senses;  one's conscience
 state of mind;  mental state;  mental attitude
 other intention;  secret purpose;  ulterior motive;  ill will;  fickleness;  double-mindedness
 heeding;  paying attention;  bearing in mind
 centre of gravity (center);  centroid;  barycenter;  (one's) balance
 uneasiness;  uncertainty;  anxiety;  apprehension;  restlessness;  insecurity
 extreme religious piety;  unshakable faith
 heart;  guts;  nerve;  central part
 regrettable;  vexing;  upsetting;  unthinkable;  wholly unexpected
 solicitude;  consideration;  concern;  (excessive) kindness
 evil thought;  malicious motive
 discrimination;  historical school of poetic thought;  attachment;  distractions
 passion for gambling;  fondness for speculation;  speculative spirit
 sense of honor;  sense of honour
 ambition;  aspiration;  sinister designs;  treachery
 self-esteem;  self-respect;  self-importance;  conceit;  pride
 mental derangement;  madness;  insanity
 patriotic feelings;  patriotism
 doubt;  suspicion;  fear;  apprehension
 merciful heart;  compassion;  mercy;  benevolence
 from the bottom of one's heart;  heartily;  sincerely
 curiosity;  inquisitiveness
 sentiment;  emotions;  one's feelings;  one's heart
 state of mind;  mentality;  psychology
 double suicide;  lovers' suicide
 one's heart;  the mind;  inner feelings;  inmost thoughts;  true motives
 one's self-possession;  one's presence of mind
 conversion;  reform;  correcting someone's conduct
 consenting to;  being convinced of;  being satisfied;  understanding
 (sound of one's) heartbeat
 (religious) piety;  faith;  devotion
 city centre (center) (esp. capital city);  urban centre;  heart of city a metropolis
 innermost feelings;  heart;  motive
 self-control;  self-restraint
 concentricity;  same mind;  unanimity;  policeman;  constable in the Edo period
 desire for revenge;  vengeful thought
 impression;  strong belief;  conviction
 ambition;  aspiration;  desire to improve oneself
 feeling of envy;  jealous feeling
 belligerence;  fighting spirit
 mental image;  mental picture;  image
 suspicion (of others);  jealousy
 inquisitive mind;  spirit of inquiry;  spirit of enquiry
 sadistic desires;  sadistic feelings
 worry;  mental agony;  heartache
 attachment (to);  tenacity of purpose
 intention;  plan;  purpose;  expectation
 duplicity;  treachery;  double-dealing
 continued alertness;  unrelaxed alertness;  follow-through (e.g. in archery);  lingering affection;  attachment
 adventurous spirit;  sense of adventure
 Zen monk's early morning meal;  refreshment;  cakes;  simple Chinese food;  dim sum
 change of mind;  inconstancy;  apostasy
 pride;  self-confidence;  self-esteem;  self-conceit
 absent-mindedness;  stupor;  stupefaction;  fainting
 selfishness;  selfish motive
 spirit of self-reliance;  feeling of independence
 heart and soul;  one's soul (heart)
 heart and lungs;  cardiopulmonary;  heart and lung machine
 shaft;  axle;  mandrel;  arbor;  centre of a group
 center of an explosion;  centre of an explosion
 mind;  disposition;  nature
 to be mentally fatigued;  to tired to the bone
 zenith;  divine will;  providence
 selfishness;  egotism;  egoism;  egocentricity
 one's mind;  the bottom of one's heart;  inner feelings
 spirit of study (inquiry, enquiry);  (having) an inquiring mind
 treachery;  treacherous designs
 centre of circle;  center of circle
 good feeling;  comfortable feeling
 atrium;  chamber of the heart
 pericardium;  pericardial sac
 endurance;  perseverance;  patience
 caution;  precaution;  care
 virtue;  moral sense;  conscience
 Edo-period popularized blend of Buddhist, Shinto and Confucian ethical teachings (popularised)
 love for one's school or alma mater
 imperturbability;  steadfastness;  cool head in an emergency;  keeping one's calm (e.g. during a fight)
 poetic sentiment or inspiration;  poetic inclination or taste;  poem-composing mood;  ability to appreciate poetry
 spirit of unity;  team spirit;  esprit de corps
 cardiac tamponade;  pericardial tamponade
 skepticism;  scepticism;  doubt
 marrow;  pith;  centre;  center;  bottom of one's heart
 heroic spirit;  brave heart;  aspiration;  ambition
 prudence;  distinction;  discrimination
 (beriberi-caused) heart failure
 reserve;  alienation;  estrangement
 central pillar of a pagoda
 circumcenter;  circumcentre;  outer center;  outer centre
 choy sum (Brassica rapa var. parachinensis);  choi sum;  Chinese flowering cabbage
 being bold and courageous, but also careful and meticulous
 malicious intent;  inclination for wrongdoing;  rebellious mind
 body and soul;  mind and body;  bottom of one's heart;  depth of one's heart
 contemplating Buddha while chanting his name
 myocardial rupture;  cardiac rupture;  heart rupture;  cardiorrhexis
 lake shaped like the kanji "heart" character (traditional Japanese gardens)
 mercenary spirit;  mind oriented to money-making
 centerless grinding;  centreless grinding
 left ventricular assist device;  LVAD
 reduction left ventriculoplasty;  Batista procedure
 middle of a body of water (e.g. a lake, a river)
 body-centered cubic lattice
 face-centered cubic structure
 face-centered cubic lattice
 bicameral mind;  bicameralism