anxiety vs foreboding

anxiety

noun
  • A state of restlessness and agitation, often accompanied by a distressing sense of oppression or tightness in the stomach. 

  • An unpleasant state of mental uneasiness, nervousness, apprehension and obsession or concern about some uncertain event. 

  • An uneasy or distressing desire (for something). 

foreboding

noun
  • A sense of evil to come. 

  • An evil omen. 

adj
  • Of ominous significance; serving as an ill omen; foretelling of harm or difficulty. 

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