flagship vs mother

flagship

noun
  • 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. 

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

verb
  • To act as a flagship for. 

mother

noun
  • Something that is the greatest or most significant of its kind. (See mother of all.) 

  • A female parent, sometimes especially a human; a female who parents a child (which she has given birth to, adopted, or fostered). 

  • A female who has given birth to a baby; this person in relation to her child or children. 

  • The principal piece of an astrolabe, into which the others are fixed. 

  • A striking example. 

  • Dregs, lees; a stringy, mucilaginous or film- or membrane-like substance (consisting of acetobacters) which develops in fermenting alcoholic liquids (such as wine, or cider), and turns the alcohol into acetic acid with the help of oxygen from the air. 

  • Motherfucker. 

  • The female superior or head of a religious house; an abbess, etc. 

  • A female who donates a fertilized egg or donates a body cell which has resulted in a clone. 

  • A pregnant female, possibly as a shortened form of mother-to-be; a female who gestates a baby. 

  • A source or origin. 

  • A locomotive which provides electrical power for a slug. 

  • A disc produced from the electrotyped master, used in manufacturing phonograph records. 

  • A female ancestor. 

  • Any elderly woman, especially within a particular community. 

  • Any person or entity which performs mothering. 

verb
  • To treat as a mother would be expected to treat her child; to nurture. 

  • To develop mother. 

  • To give birth to or produce (as its female parent) a child. (Compare father.) 

  • To cause to contain mother (“that substance which develops in fermenting alcohol and turns it into vinegar”). 

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