decline vs derive

decline

verb
  • To recite all the different declined forms of (a word). 

  • To choose not to do something; refuse, forbear, refrain. 

  • To run through from first to last; to recite in order as though declining a noun. 

  • To cause to decrease or diminish. 

  • To bend downward; to bring down; to depress; to cause to bend, or fall. 

  • To turn or bend aside; to deviate; to stray; to withdraw. 

  • To move downwards, to fall, to drop. 

  • To inflect for case, number, gender, and the like. 

  • To reject a penalty against the opposing team, usually because the result of accepting it would benefit the non-penalized team less than the preceding play. 

  • To become weaker or worse. 

noun
  • A weakening. 

  • Downward movement, fall. 

  • A reduction or diminution of activity. 

  • The act of declining or refusing something. 

  • A sloping downward, e.g. of a hill or road. 

derive

verb
  • To find the derivation of (a word or phrase). 

  • To deduce (a conclusion) by reasoning. 

  • To originate or stem (from). 

  • To create (a compound) from another by means of a reaction. 

  • To obtain or receive (something) from something else. 

  • To turn the course of (water, etc.); to divert and distribute into subordinate channels. 

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