20 most important words

From Biolecture.org
  1.  family : a group of people related to one another by blood or marriage
  2.  friend : a person whom one knows and with whom one has a bond of mutual affection, acts as a supporter
  3.  self-confidence : trust in one's abilities, qualities, and judgement
  4.  will : the faculty by which a person decides on and initiates action
  5.  habit : a settled or regular tendency or practice, especially one that is hard to give up / an addictive practice / an automatic reaction to a specific situation
  6.  gratitude : the quality of being thankful readiness to show appreciation for and to return kindness
  7.  manners : social behavior or habits / a person's outward bearing or way of behaving towards others
  8.  evaluation : the quality of being thankful / readiness to show appreciation for and to return kindness
  9.  variable : liable to change / tending to change direction
  10.  occupation : a way of spending time
  11.  career : an occupation for a significant period of a person's life and with opportunities for progress
  12.  teach : impact knowledge to or instruct as to how to do something / encourage someone to accept as a fact or principle
  13.  failure : the omission of expected or required action / a lack of desirable quality
  14.  success : the accomplishment of an aim or purpose
  15.  time : the indefinite continued progress of existence and events in the past, present, and future regarded as a whole / the progress of time as affecting people and things
  16.  past : gone by in time and no longer existing
  17.  present : existing or occuring now / now being considered and mattered / what matters
  18.  university : a high-level educational institution in which students study for degress and academic research
  19.  water : H2O / the basis of the fluids of living organisms
  20.  science : the intellectual and practical study of the structure and behavior of the physical and natural world through observation and experiment