mother vs stepmommy

mother

noun
  • A female ancestor. 

  • 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. 

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

  • 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”). 

stepmommy

noun
  • stepmother 

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