admiral vs flagship

admiral

noun
  • The ship which carries the admiral, the flagship; also, the most considerable ship of a fleet. 

  • A naval officer of high rank, immediately below Admiral of the Fleet; the commander of a fleet or squadron. 

  • A flag officer in the United States Navy or Coast Guard of a grade superior to vice admiral and junior to admiral of the fleet (when that grade is used). An admiral is equal in grade or rank to a four-star general. 

  • A naval officer of the highest rank; the commander of a country's naval forces. 

  • Any of various nymphalid butterflies of the genera Kaniska, Limenitis and Vanessa, especially a red admiral or white admiral. 

flagship

noun
  • The ship regarded as most important out of a group, e.g. a nation's navy or company's fleet. 

  • The most important one out of a related group. 

  • The ship occupied by the fleet's commander (usually an admiral); it denotes this by flying his flag. 

verb
  • To act as a flagship for. 

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