declination vs embargo

declination

noun
  • A refusal. 

  • At a given point, the angle between magnetic north and true north. 

  • At a given point, the angle between the line connecting this point with the geographical center of the earth and the equatorial plane. 

embargo

noun
  • A temporary ban on making certain information public. 

  • A heavy burden or severe constraint on action or expenditure. 

  • An order by the government prohibiting ships from leaving port. 

  • A ban on trade with another country. 

verb
  • To impose an embargo on trading certain goods with another country. 

  • To impose an embargo on a document. 

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