insufficient vs poor

insufficient

adj
  • Not sufficient; lacking competent power or ability; unqualified, unequal, unfit. 

  • Not sufficient; of a type or kind that does not suffice, that does not satisfy requirements or needs. 

det
  • An inadequate quantity of; not enough. 

  • A quantity (of something) that is less than is needed. 

poor

adj
  • Inadequate, insufficient. 

  • Deficient in a specified way. 

  • Of low quality. 

  • Free from self-assertion; not proud or arrogant; meek. 

  • Used to express pity. 

  • With no or few possessions or money, particularly in relation to contemporaries who do have them. 

verb
  • Synonym of impoverish, to make poor. 

noun
  • A poor person. 

  • The poor people of a society or the world collectively, the poor class of a society. 

How often have the words insufficient and poor occurred in a corpus of books? (source: Google Ngram Viewer )