dilemma vs entanglement

dilemma

noun
  • A difficult circumstance or problem. 

  • A type of syllogism of the form "if A is true then B is true; if C is true then D is true; either A or C is true; therefore either B or D is true". 

  • A circumstance in which a choice must be made between two or more alternatives that seem equally undesirable. 

  • Offering to an opponent a choice between two (equally unfavorable) alternatives. 

entanglement

noun
  • The condition of being deeply involved and intricated (with politics, a group, another person, etc.) 

  • An obstruction of cables and spars across a river or harbour entrance. 

  • The condition, or an instance, of being romantically or sexually involved with another person; an affair. 

  • The act of entangling. 

  • An obstruction placed in front or on the flank of a fortification, to impede an enemy's approach. 

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