complication vs history

complication

noun
  • A person who doesn't fit in with the main scheme of things; an interloper. 

  • The state of being complicated; intricate or confused relation of parts; complexity. 

  • The act or process of complicating. 

  • A feature beyond basic time display in a timepiece. 

  • A disease or diseases, or adventitious circumstances or conditions, coexistent with and modifying a primary disease, but not necessarily connected with it. 

history

noun
  • A record of previous user events, especially of visited web pages in a browser. 

  • The aggregate of past events. 

  • Something that no longer exists or is no longer relevant. 

  • The portion of the past that is known and recorded by this field of study, as opposed to all earlier and unknown times that preceded it (prehistory). 

  • A set of events involving an entity. 

  • Shared experience or interaction. 

  • A record or narrative description of past events. 

  • The branch of knowledge that studies the past; the assessment of notable events. 

  • A list of past and continuing medical conditions of an individual or family. 

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