jack mackerel vs yeoman

jack mackerel

noun
  • Any of various edible fish, especially of genus Trachurus, but also genera Caranx, Acanthocybium and Euthynnus. 

yeoman

noun
  • Any of various nymphalid butterflies of the genus Cirrochroa, of Asia and Australasia. 

  • An official providing honorable service in a royal or high noble household, ranking between a squire and a page. Especially, a yeoman of the guard, a member of a ceremonial bodyguard to the UK monarch (not to be confused with a Yeoman Warder). 

  • A subordinate, deputy, aide, or assistant. 

  • In a vessel of war, the person in charge of the storeroom. 

  • A member of the Yeomanry Cavalry, officially chartered in 1794 originating around the 1760s. 

  • A member of the Imperial Yeomanry, officially created in 1890s and renamed in 1907. 

  • A former class of small freeholders who farm their own land; a commoner of good standing. 

  • A Yeoman Warder. 

  • A clerk in the US Navy, and US Coast Guard. 

  • A dependable, diligent, or loyal worker or someone who does a great service. 

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